londiste: actually execute the ENABLE/DISABLE RULE query in londiste.create_partition
More newgrants fixes..
Revert "setup_skytools: install grant files under /usr/share/skytools"

This reverts commit c63236f11753c06a10dee125f2dc1cd241e92714.

setup_skytools.py wants ability to regenerate the fixes in pure-Python,
which is pain for grant files.  Will look into it later.
Merge remote-tracking branch 'petr/master'