Revert "xscreensaver - modify Makefile POST_UNPACK to find gconf headers"

This reverts commit d95af5f578bad8e2abae0b8d35e061b4bd4c0835.
Merge pull request #181 from pyhalov/correct_xscreensaver

Revert "xscreensaver - modify Makefile POST_UNPACK to find gconf headers...