Issue #27057: Fix os.set_inheritable() on Android, ioctl() is blocked by
SELinux and fails with EACCESS. The function now falls back to fcntl().

Patch written by Michał Bednarski.

Removes versioning from py.exe launcher installer and ensures that old launchers are replaced by newer ones.

Documentation updates by Martin Panter.

issue27045 - Use backslash in windows path to script file.

Patch by Xiang Zhang.