src/bin contains some stuff that is not an executable script, such as sage-README-osx.txt.
It should be moved elsewhere; and also be installed in a place other than $SAGE_LOCAL/bin.

See also:

• Install src/bin/* scripts via setup.py (scripts, console_scripts) #21569: Install src/bin/* scripts via setup.py (scripts, console_scripts)
• Install src/bin scripts by sagelib's setup.py, not make #21559: Move sage-the-distribution scripts from src/bin to build/bin

. . . . . . . . . . . . . .

Info: https://docs.python.org/2/distutils/setupscript.html#installing-package-data

CC: @embray @nexttime @jdemeyer @dimpase @kiwifb

Component: build

Reviewer: Matthias Koeppe, Samuel Lelièvre

Issue created by migration from https://trac.sagemath.org/ticket/21570