Fix JNI for C instead of C++

… constructor and throws if it cannot lock the lock file.

This commit closes bitcoin#10

Added new testnet genesis block and start DGW3 fork at block 10

…BitcoinMiner().

This fixes an assertion failure crash when starting ppcoin-qt. The assertion
failure is caused by a static call to the _() function. The issue is fixed by
making strMintMessage a non-static local variable inside BitcoinMiner().

Assertion failure message (from Sunny):

ppcoin-qt: /usr/include/boost/smart_ptr/shared_ptr.hpp:412: boost::shared_ptr<T>::reference boost::shared_ptr<T>::operator*() const [ with T = <snip> ]: Assertion `px != 0' failed.

Backtrace of the crash:

 #0  0x0000003565435309 in raise () from /lib64/libc.so.6
 #1  0x0000003565436668 in abort () from /lib64/libc.so.6
 #2  0x000000356542e476 in __assert_fail_base () from /lib64/libc.so.6
 bitcoin#3  0x000000356542e522 in __assert_fail () from /lib64/libc.so.6
 bitcoin#4  0x0000000000475dbe in operator* (this=<optimized out>) at /usr/include/boost/smart_ptr/shared_ptr.hpp:646
 bitcoin#5  operator() (arg1=0x649fd8 "Info: Minting suspended due to locked wallet.", this=<optimized out>) at /usr/include/boost/signals2/detail/signal_template.hpp:695
 bitcoin#6  _ (psz=psz@entry=0x649fd8 "Info: Minting suspended due to locked wallet.") at src/ui_interface.h:106
 bitcoin#7  0x000000000049f5f7 in __static_initialization_and_destruction_0 (__initialize_p=__initialize_p@entry=1, __priority=__priority@entry=65535) at src/main.cpp:3345
 bitcoin#8  0x00000000004af11a in _GLOBAL__sub_I_cs_setpwalletRegistered () at src/main.cpp:5303
 bitcoin#9  0x0000000000620d0d in __libc_csu_init ()
 bitcoin#10 0x0000003565421aa5 in __libc_start_main () from /lib64/libc.so.6
 bitcoin#11 0x000000000042b9f8 in _start ()

Update README with different mainchain branch name

Update README.md

Closes bitcoin#10

[miner] [leak] shrinkingsets are now properly cleaned up on destruction.

c521b3a Merge #11: fixup define checks. Cleans up some oopses from #5.
8b1cd37 fixup define checks. Cleans up some oopses from #5.
6b1508d Merge #6: Fixes typo
fceb805 Merge #10: Clean up compile-time warnings (gcc 7.1)
0ec2a34 Clean up compile-time warnings (gcc 7.1)
d4c268a Merge #5: Move helper functions out of sse4.2 object
8d4eb08 Add HasAcceleratedCRC32C to port_win.h
77cfbfd25 crc32: move helper functions out of port_posix_sse.cc
4c1e9e0 silence compiler warnings about uninitialized variables
4953164 Merge #2: Prefer std::atomic over MemoryBarrier
2953978 Fixes typo
f134284 Merge #1: Merge upstream LevelDB 1.20
ba8a445 Prefer std::atomic over MemoryBarrier

git-subtree-dir: src/leveldb
git-subtree-split: c521b3a

More build fixups

…#10)" (#12)

This reverts commit 4eb5c1d.

51d3ab3 Merge #10: Add pushKV(key, boolean) function (replaces #5)
129bad9 [tests] test pushKV for boolean values
b3c44c9 Pushing boolean value to univalue correctly

git-subtree-dir: src/univalue
git-subtree-split: 51d3ab3

51d3ab3 Merge #10: Add pushKV(key, boolean) function (replaces #5)
129bad9 [tests] test pushKV for boolean values
b3c44c9 Pushing boolean value to univalue correctly

git-subtree-dir: src/univalue
git-subtree-split: 51d3ab3

51d3ab3 Merge bitcoin#10: Add pushKV(key, boolean) function (replaces bitcoin#5)
129bad9 [tests] test pushKV for boolean values
b3c44c9 Pushing boolean value to univalue correctly

git-subtree-dir: src/univalue
git-subtree-split: 51d3ab3

51d3ab3 Merge bitcoin#10: Add pushKV(key, boolean) function (replaces bitcoin#5)
129bad9 [tests] test pushKV for boolean values
b3c44c9 Pushing boolean value to univalue correctly

git-subtree-dir: src/univalue
git-subtree-split: 51d3ab3

c521b3a Merge #11: fixup define checks. Cleans up some oopses from #5.
8b1cd37 fixup define checks. Cleans up some oopses from #5.
6b1508d Merge #6: Fixes typo
fceb805 Merge #10: Clean up compile-time warnings (gcc 7.1)
0ec2a34 Clean up compile-time warnings (gcc 7.1)
d4c268a Merge #5: Move helper functions out of sse4.2 object
8d4eb08 Add HasAcceleratedCRC32C to port_win.h
77cfbfd25 crc32: move helper functions out of port_posix_sse.cc
4c1e9e0 silence compiler warnings about uninitialized variables
4953164 Merge #2: Prefer std::atomic over MemoryBarrier
2953978 Fixes typo
f134284 Merge #1: Merge upstream LevelDB 1.20
ba8a445 Prefer std::atomic over MemoryBarrier

git-subtree-dir: src/leveldb
git-subtree-split: c521b3a

Add autocomplete to bitcoin-qt's console window.

Add README information and build instructions

Remove redundant if in hashrate calculation

6f53edb Acquire cs_main before ATMP call in block_assemble bench (James O'Beirne)

Pull request description:

  Calling `bench_bitcoin` currently fails due to calling ATMP without acquiring cs_main first in the recently added block_assemble bench (#13219).

  ```
  $ cat <(uname -a) <(gcc --version)

  Linux james 4.4.0-119-generic #143+jamesob SMP Mon Apr 16 21:47:24 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux
  gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609

  $ ./src/bench/bench_bitcoin

  WARNING: This is a debug build - may result in slower benchmarks.
  # Benchmark, evals, iterations, total, min, max, median
  Assertion failed: lock cs_main not held in validation.cpp:566; locks held:
  [1]    19323 abort (core dumped)  ./src/bench/bench_bitcoin
  ```

  ```
  (gdb) bt
  #0  0x00007fbdc9cf5428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
  #1  0x00007fbdc9cf702a in __GI_abort () at abort.c:89
  #2  0x0000555a19580dc5 in AssertLockHeldInternal (pszName=pszName@entry=0x555a19834549 "cs_main",
      pszFile=pszFile@entry=0x555a1988a001 "validation.cpp", nLine=nLine@entry=566, cs=cs@entry=0x555a19ba55c0 <cs_main>) at sync.cpp:157
  #3  0x0000555a194b395f in AcceptToMemoryPoolWorker (chainparams=..., pool=..., state=...,
      ptx=std::shared_ptr (count 1, weak 0) 0x555a1bb819b0, pfMissingInputs=pfMissingInputs@entry=0x0, nAcceptTime=1532964079,
      plTxnReplaced=0x0, bypass_limits=false, nAbsurdFee=@0x7ffcbc1719d8: 0, coins_to_uncache=std::vector of length 0, capacity 0,
      test_accept=false) at validation.cpp:566
  #4  0x0000555a194ba661 in AcceptToMemoryPoolWithTime (chainparams=..., pool=..., state=...,
      tx=std::shared_ptr (count 1, weak 0) 0x555a1bb819b0, pfMissingInputs=pfMissingInputs@entry=0x0, nAcceptTime=<optimized out>,
      plTxnReplaced=0x0, bypass_limits=false, nAbsurdFee=0, test_accept=false) at validation.cpp:998
  #5  0x0000555a194ba7ce in AcceptToMemoryPool (pool=..., state=..., tx=std::shared_ptr (count 1, weak 0) 0x555a1bb819b0,
      pfMissingInputs=pfMissingInputs@entry=0x0, plTxnReplaced=plTxnReplaced@entry=0x0, bypass_limits=bypass_limits@entry=false, nAbsurdFee=0,
      test_accept=false) at validation.cpp:1014
  #6  0x0000555a19363fbe in AssembleBlock (state=...) at bench/block_assemble.cpp:102
  #7  0x0000555a193654d3 in std::_Function_handler<void (benchmark::State&), void (*)(benchmark::State&)>::_M_invoke(std::_Any_data const&, benchmark::State&) (__functor=..., __args#0=...) at /usr/include/c++/5/functional:1871
  #8  0x0000555a193501d7 in std::function<void (benchmark::State&)>::operator()(benchmark::State&) const (this=this@entry=0x555a1ba2cda0,
      __args#0=...) at /usr/include/c++/5/functional:2267
  #9  0x0000555a1934ec4c in benchmark::BenchRunner::RunAll (printer=..., num_evals=5, scaling=<optimized out>, filter=..., is_list_only=false)
      at bench/bench.cpp:121
  #10 0x0000555a1934ade9 in main (argc=<optimized out>, argv=<optimized out>) at bench/bench_bitcoin.cpp:92
  ```

Tree-SHA512: fdd7b28ff123ccea7a4f334d53f735d0c0f94aa9cc52520c2dd34dca45d78c691af64efcd32366fc472fedffbd79591d2be2bb3bfc4a5186e8712b6b452d64e3

Add constructor to make legacy block from regular block. Use it to ma…

…lease

set release true

e21276a qt test: Don't bind to regtest port (Andrew Chow)

Pull request description:

  The qt tests don't need to bind to the regtest port. By not binding, it will no longer conflict with existing regtest instances and the tests will run as normal.

  Fixes #10

ACKs for top commit:
  MarcoFalke:
    cr ACK e21276a
  jarolrod:
    re-ACK e21276a, tested on macOS 11.2

Tree-SHA512: 5a269ee043f9aff7900e092c166de71912a2bf86ebe2982b3fb0e26bdebfb91869ee5d0f62082fd608c1288bfb7981f6c8647e504b11176711d7fec993a09164