Merged revision(s) 1525-1538 from trunk, updated to ZDoom r4182. Mostly bugfixes, but this includes also the "new" Floor_RaiseAndCrushDoom, support for setting user variables on things from UDMF, the Brazilian language file, alt-hud enhancements, and a few additional minor DECORATE features.

git-svn-id: http://mancubus.net/svn/hosted/gzdoom/branches/doom64@1539 b0f79afe-0144-0410-b225-9a4edf0717df