A couple of smaller fixes;

- Modifier Panel, name label for "Virtual" modifiers was too short
- On extrude Bones, "soft distance" now is always set based on length
  of the bone (also on CTRL+click, also when Envelope drawmode is not set)
- Added undo-push for "Apply Bone Envelopees to VertexGroup" in WeightPaint.
- Menu-buttons in floating panels sometimes gave drawing error
- InfoWindow buttons were always allocated & drawn, even when window was
  zero sized... waste of cpu, tsk!

source/blender/src/space.c

@@ -2297,7 +2297,7 @@ void drawinfospace(ScrArea *sa, void *spacedata)
 	short edgsp, midsp;
 	char naam[32];
 
-	if(curarea->win==0) return;
+	if(curarea->win==0 || curarea->winy<2) return;
 
 	BIF_GetThemeColor3fv(TH_BACK, col);
 	glClearColor(col[0], col[1], col[2], 0.0);