interdiff: New completion.
koji: Complete on build targets when --target is given to wait-repo.
lua: New completion.
luac: New completion.
pkg-config: Try to complete --variable= if package name is already given.
tar: Fix completing files inside *.tlz when J is explicitly given.
tar: Support *.tar.lz (Debian: #703599).
patch: New full featured completion.
unzip/zipinfo: Associate with more StarOffice extensions.
jar: Reuse unzip's xspec (RedHat: #928253).
Add config for cmake to bash-completion.

This will allow projects using cmake to get information about
bash-completion. This works much like pkg-config files.