patch #3011 ] update to curnurb.setFlagU doc, added set and get for Taper

Contributed by Toni Alatalo (antont).

Support for Taper Objects for Curves.
Code for curnurb.setFlagU() method not changed as per discussion on
bf-python mail list.

source/blender/python/api2_2x/doc/Curve.py

@@ -338,6 +338,23 @@ class Curve:
     @raise TypeError: throws exception if the parameter is not a Curve type Blender Object or PyNone
     """
 
+  def getTaperOb():
+    """
+    Returns the Taper Object (TaperOb) assigned to the Curve.
+    @rtype: Blender Object or PyNone
+    @return: Taper Object (TaperOb) assigned to the Curve.
+    """
+
+  def setTaperOb( object ):
+    """
+    Assign a Taper Object (TaperOb) to the Curve.  Passing None as the object parameter removes the taper.
+    @rtype: PyNone
+    @return: PyNone
+    @type object: Curve type Blender Object
+    @param object: Blender Object to assign as Taper Object (TaperOb)
+    @raise TypeError: throws exception if the parameter is not a Curve type Blender Object or PyNone
+    """
+
   def update():
     """
     Updates display list for a Curve.
@@ -401,7 +418,7 @@ class CurNurb:
 
     The CurNurb also supports the sequence protocol which means you can access the control points of a CurNurb using the [] operator.
 
-    @ivar flagU: The CurNurb knot flag U (0: uniform, 1: endpoints, 2: bezier)
+    @ivar flagU: The CurNurb knot flag U.  See L{setFlagU} for bit definitions.
     @ivar flagV: The CurNurb knot flag V (0: uniform, 1: endpoints, 2: bezier)
     @ivar type: The type of the curve (Poly: 0, Bezier: 1, NURBS: 4)
     """
@@ -467,16 +484,19 @@ class CurNurb:
 
     def getFlagU():
       """
-      Get the CurNurb knot flag U 
+      Get the CurNurb knot flag U.  This flag is a bitfield.  See L{setFlagU} for bit definitions.
       @rtype: integer
-      @return: 0 - uniform, 1 - endpoints, 2 - bezier
+      @return: 0 - uniform, 2 - endpoints, 4 - bezier
       """
 
     def setFlagU( value ):
       """
-      Set the CurNurb knot flag U (knots are recalculated automatically)
+      Set the entire CurNurb knot flag U (knots are recalculated automatically).  Another of Blender's bitfields.
+        - bit 0:  continuous.
+        - bit 1:  endpoints.
+        - bit 2:  bezier.
       @type value: integer
-      @param value: CurNurb knot flag (0 - uniform, 1 - endpoints, 2 - bezier)
+      @param value: CurNurb knot flag (0 - uniform, 2 - endpoints, 4 - bezier)
       @rtype: PyNone
       @return: PyNone
       """