Convert plRegistryNode stuff to plString.
Fix issues pointed out in code review.
Fix memory leaks.
Fix format string here.
Some fixes to make it all compile.
Merge pull request #251 from dpogue/plresmgr-strings

Convert plRegistryNode stuff to plString.
Generate ComCtl manifests for the Win32 GUI executables
Merge pull request #256 from zrax/win-themes

Use Windows themes for the Win32 GUI executables
Add a Doxyfile and some plString documentation
Merge pull request #258 from zrax/doxygen

Add a Doxyfile and some plString documentation
Add Truncate() method to plStringStream, which truncates the buffer without reallocating memory
Add plFileName string specialization for filename manipulation
Add plFileName::Join static method to join paths together correctly
Clean up some miscellaneous non-optimal string uses
Add doxygen docs to plFileName
Merge pull request #257 from zrax/plString

Add Truncate() method to plStringStream
Merge pull request #259 from zrax/plFileName

Add plFileName
Use plString in pfLocalizationMgr.

Conflicts:
	Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizationDataMgr.cpp
	Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizationDataMgr.h
	Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizedString.h
Use plString in pfLocalizationMgr - Part 2

More clean-up and adjustments to use plString in pfLocalizationMgr
and associated classes.
Convert plLocalizationEditor to use plString.

Required to match previous commits to pfLocalizationMgr and retain functionality.