libgladeui .pc file should use Requires.private
Submitted by Owen Taylor
Requires: gtk+-2.0 >= 2.14.0 libxml-2.0 >= 2.4.0
But there are no references to the libxml types in any installed header file, so strictly speaking libxml-2.0 should be moved to Requires.private.
If you do that, you probably should also add:
to be added to the configure.ac.