Taskpanels for Drilling, Engrave, and Profile basically working

Profile still missing some functionality.
I haven't tried to do anything about cmake requirements or testing.
This is a checkpoint commit, please don't build.

src/Mod/Path/PathScripts/PathCompoundExtended.py

@@ -22,7 +22,7 @@
 #*                                                                         *
 #***************************************************************************
 
-import FreeCAD,FreeCADGui,Path,PathGui
+import FreeCAD,FreeCADGui,Path,PathGui, PathUtils
 from PySide import QtCore,QtGui
 
 """Path Compound Extended object and FreeCAD command"""
@@ -54,6 +54,13 @@ class ObjectCompoundExtended:
     def __setstate__(self,state):
         return None
 
+    def onChanged(self,obj,prop):
+        if prop == "Group":
+            print 'check order'
+        for child in obj.Group:
+            if child.isDerivedFrom("Path::Feature"):
+                child.touch()    
+
     def execute(self,obj):
         cmds = []
         for child in obj.Group: