A user submitted a BVH file that took a long time to import (I didnt end up finishing since it was so slow)

this is mainly because adding pose keyframes recalculates every handle so importing became increasingly slow.

added a 'fast' argument to insertkey that python api's insertPoseKey can make use of since it alredy accepts a 'fast' option.

The ~4450 frame, 31 bone BVH imports in ~108sec now

Seperated editmode switch statement in space.c's event handling,
if editmode is disabled, or the images is a render or composite, UV editing operations are ignored.
In previous releases it has given an annoying warning if selecting or scaling is attempted when out of UV/Face mode.

source/blender/python/api2_2x/Constraint.c

@@ -431,9 +431,9 @@ static PyObject *Constraint_insertKey( BPy_Constraint * self, PyObject * value )
 				"cannot get a curve from this IPO, may be using libdata" );
 	
 	if( ob->action )
-		insert_vert_icu( icu, get_action_frame(ob, cfra), con->enforce);
+		insert_vert_icu( icu, get_action_frame(ob, cfra), con->enforce, 0);
 	else
-		insert_vert_icu( icu, cfra, con->enforce);
+		insert_vert_icu( icu, cfra, con->enforce, 0);
 
 	Py_RETURN_NONE;
 }