pre-commit-hook.py: Band-aid around lily built within run/
pre-commit-hook.py: Band-aid around lily built within run/

I can't currently figure out how to get autoconf to dump the lily
executable in the original source directory. So, as a (hopefully
temporary) fix, have the pre-commit-hook.py script source it from
the run directory where it gets built.

jesserayadkins/lily,FascinatedBox/lily,FascinatedBox/lily,jesserayadkins/lily,jesserayadkins/lily,FascinatedBox/lily,FascinatedBox/lily