Fixed critical memory leak in Con_Dump_f.
Moved success message in Con_Dump_f after opening of file.
Merged MP condump fixes to SP.
Allow mousewheel scrolling in SP's vertical listboxes and multi type fields.
Ported from MP codebase.
Make the "given initial values x & y" message developer-only in SP as it is in MP.
ui_prisonerobj_maxtotal seems to trigger it because the save file has different starting value than whats actually in code or something.
Fixed GL error with SDL on startup if not using nvidia card.
Changed _isnan to Q_isnan for OSX.
Fixed MP renderer for 64-bit builds.