- Implemented flat offset editing in 3d mode (udmf+zdoom only)
- Semi-implemented flat/wall scale editing in 3d mode
- Fixed load/save of line specials in udmf format
- Changed a few default cvar settings

git-svn-id: http://mancubus.net/svn/hosted/slade/trunk@1396 1ddb354d-3e0c-0410-833a-d70222086f97