add a .pc file so other modules can use good plugins in tests

Original commit message from CVS:

* Makefile.am:
* configure.ac:
* pkgconfig/.cvsignore:
* pkgconfig/Makefile.am:
* pkgconfig/gstreamer-plugins-good-uninstalled.pc.in:
add a .pc file so other modules can use good plugins in tests
6 files changed