Remove unused function
Handle multiple windows and arbitrary window outlines
Warning fix
Implement better window positioning, not loading correct position yet
Remove unused code
Remove commented-out line
Remove commented-out code
Add some if-def'd out code for testing voids without carve
Typo fox
Rewrite IFC window loading, works now
Add temporary hack to avoid crashes in libcarve

This fixes common case of doors that are flush with bottom of the
wall, not a real fix though.
Fix building memory leaks