Use a proper XML library instead of CEGUI’s XML lib

[Quintus]

People are constantly having problems with their CEGUI not having the NullRenderer and using a proper XML library directly rather than CEGUI’s (not really good) wrapper is better anyway. Use libxml++ instead.

The following things need to be done in order to remove CEGUI’s XML handling:

• Convert the level loader to libxml++✓
• Convert the world loader to libxml++ ✓
• Convert the savegame loader to libxml++ ✓
• Convert the user preferences loader to libxml++ ✓
• Convert the editor config loader to libxml++ ✓
• Convert the campaign loader to libxml++ ✓
• Convert the level writer to libxml++ ✓
• Convert the world writer to libxml++ ✓
• Convert the savegame writer to libxml++ ✓
• Convert the user preferences writer to libxml++ ✓
• Convert the campaign writer to libxml++ ✓

[Quintus]

Work on this is done in the use-libxml++ branch. It’s a huge issue, but some progresss has already been made; I’ll edit the initial report for a better overview.

[Quintus]

It is nearly done I hope. All XML interfaces have been rewritten to use libxml++, now the time has come to wipe out CEGUI’s XML. When done, I’m going to close this issue.