On compilation of .pyc/.pyo bytecode files on import Python 2.6 copies
Unix file access attributes (-rwx-) from the imported file. I'd think
it's ok except for executable (-x-) bit - bytecode files are not
directly executable. That is, for a module.py with attributes -rwxr-x---
I expect python2.6 -c 'import module' would produce module.pyc with
attributes -rw-r-----.

python compileall.py . saves compiled files without the executable bit;
it doesn't copy attributes - it just saves files and saving obeys umask.
python2.5 -c 'import module.py' doesn't copy the executable bit, it
obeys umask too. I consider this as a regression in 2.6. Please mask out
executable bits on bytecode files saving.