* Step-down of first hud message when chat is active is based on hud_font->absh
* Stepping of hud messages is based on V_FontStringHeight
* Ability to break long HUD messages across several lines (prereq for Strife support)

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2718 86ba831e-150c-0410-ab35-e06eaae15ed9