Ugh.
Some code on scaling. Mayhem.
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03
Fixed physicsinternal.h
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03

Conflicts:
	src/physicsinternal.h
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03
Fixed some issues.
Preparation for merge.
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03
Finished preliminary, untested implementation of physics_set2dScale().
Modified warnings.
Formatting.
Some fixes.
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03
sha.pe2d -> shape2d; wor.ld2d -> world2d;
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03
Merge remote-tracking branch 'upstream/master' into physics_api_fix_readable_2013-05-03