Merge

Fix reported in bug #327, comment #3 - untested but seems reasonable/safe.

http://www.demoties.com/wp-content/uploads/2011/03/mar-01-6.jpg

Mark team for deletion when letting others know it has left during game. Should help with quitters problem.

Don't remove already removed team

wops add this too

reimplemented ResetKbd and calling it when exiting gsChat status, this restores behavior from.17: You can now walk -> press t/chat -> type some stuff while still walking -> exit gsChat and stop walking at that moment

android: fix the default make target

Android: add freezer commit message

add NOPNG to cmake to explicitly disable PNG dependency reorganise osx detection and variable initalization (simpler crosscompiling) in cmake