* Source/GSXibLoading.m: Merge from trunk of new XIB fixes.
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/branches/gnustep_testplant_branch@35483 72102866-910b-0410-8b05-ffd578937521
* Source/GSXibLoading.m: Add some classes which I found
are relevant to Xib loading: IBAccessibilityAttribute,
IBUserDefinedRuntimeAttributesPlaceholder.
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@34846 72102866-910b-0410-8b05-ffd578937521