Cleanup of various annoyances found during code audit.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2749 86ba831e-150c-0410-ab35-e06eaae15ed9
Fix for "bad music number" message when playing Doom 2 maps with no assigned music and map numbers greater than 35. Also added much-needed eclamp macro.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2750 86ba831e-150c-0410-ab35-e06eaae15ed9
Work on new unified image system.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2752 86ba831e-150c-0410-ab35-e06eaae15ed9
Translate PSX things.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2756 86ba831e-150c-0410-ab35-e06eaae15ed9
* PSX line flags
* ev_mapspecials command to print out line specials in a map

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2757 86ba831e-150c-0410-ab35-e06eaae15ed9
* Updates to 2010 project
* Fix a potential regression in ExtraData linedefs from refactoring last night.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2758 86ba831e-150c-0410-ab35-e06eaae15ed9
Merge from trunk

git-svn-id: http://mancubus.net/svn/hosted/eternity/branches/highcolor@2759 86ba831e-150c-0410-ab35-e06eaae15ed9