*sigh* sorry. I miss the old, don't-push-if-unsynced-remote-w/o-force. Keep forgetting to pull.

Unbreak build without stl compatibility

merge

even more wrapping with find_package_or_disable_msg

update option list

introduce find_package_or_fail/disable to group together similar cmake code

link png library in code on osx

Fix frozen hog rendering

Fix check for flag

hopefully closes issues 541, 312 and 503

yeah. this was a bad idea. the minor difference in thaw speed vs last hog of team never unthawing.

prevent an old abuse of parachute to land safely

fix fade to black in training

PhysFS-aware check for directory existence. Should fix issue #511.

skip frozen hogs in switch