Remove C++ escaping from *Py.xml templates

Now all escaping required for the C++ code generation is done when the
.cpp/.h files are generated. Previously, only newlines were escaped
automatically. This was a) inconsistent and b) leaked c++ details into
the xml data.
In addition, the escaping is now done in one central place, harmonizing
the three previous implementations.

Pre-existing c++ escape sequences in the XML files have been replaced by
their literal equivalent so that the resulting python doc sting remains
unchanged.

src/Mod/Fem/App/FemMeshPy.xml

@@ -168,7 +168,7 @@
                 <UserDocu>Add a group to mesh with specific name and type
                     addGroup(name, typestring, [id])
                     name: string
-                    typestring: \"All\", \"Node\", \"Edge\", \"Face\", \"Volume\", \"0DElement\", \"Ball\"
+                    typestring: "All", "Node", "Edge", "Face", "Volume", "0DElement", "Ball"
                     id: int
                     Optional id is used to force specific id for group, but does
                     not work, yet.

src/Mod/Mesh/App/MeshFeaturePy.xml

@@ -14,7 +14,7 @@
 			<UserDocu>The Mesh::Feature class handles meshes.
 The Mesh.MeshFeature() function is for internal use only and cannot be used to create instances of this class.
 Therefore you must have a reference to a document, e.g. 'd' then you can create an instance with
-d.addObject(\"Mesh::Feature\").
+d.addObject("Mesh::Feature").
 			</UserDocu>
 		</Documentation>
 		<Methode Name="countPoints">

src/Mod/Mesh/App/MeshPy.xml

@@ -23,7 +23,7 @@ Example:
   m = Mesh.Mesh()
   ... # Manipulate the mesh
   d = FreeCAD.activeDocument() # Get a reference to the actie document
-  f = d.addObject(\"Mesh::Feature\", \"Mesh\") # Create a mesh feature
+  f = d.addObject("Mesh::Feature", "Mesh") # Create a mesh feature
   f.Mesh = m # Assign the mesh object to the internal property
   d.recompute()</UserDocu>
 		</Documentation>

src/Mod/Part/App/GeometryCurvePy.xml

@@ -136,13 +136,13 @@ of the nearest orthogonal projection of the point.</UserDocu>
                 <UserDocu>
 Computes the projection of a point on the curve
 
-projectPoint(Point=Vector,[Method=\"NearestPoint\"])
-projectPoint(Vector,\"NearestPoint\") -> Vector
-projectPoint(Vector,\"LowerDistance\") -> float
-projectPoint(Vector,\"LowerDistanceParameter\") -> float
-projectPoint(Vector,\"Distance\") -> list of floats
-projectPoint(Vector,\"Parameter\") -> list of floats
-projectPoint(Vector,\"Point\") -> list of points
+projectPoint(Point=Vector,[Method="NearestPoint"])
+projectPoint(Vector,"NearestPoint") -> Vector
+projectPoint(Vector,"LowerDistance") -> float
+projectPoint(Vector,"LowerDistanceParameter") -> float
+projectPoint(Vector,"Distance") -> list of floats
+projectPoint(Vector,"Parameter") -> list of floats
+projectPoint(Vector,"Point") -> list of points
 </UserDocu>
             </Documentation>
         </Methode>

src/Mod/Part/App/GeometrySurfacePy.xml

@@ -60,13 +60,13 @@ Computes the normal of parameter (u,v) on this geometry</UserDocu>
                 <UserDocu>
 Computes the projection of a point on the surface
 
-projectPoint(Point=Vector,[Method=\"NearestPoint\"])
-projectPoint(Vector,\"NearestPoint\") -> Vector
-projectPoint(Vector,\"LowerDistance\") -> float
-projectPoint(Vector,\"LowerDistanceParameters\") -> tuple of floats (u,v)
-projectPoint(Vector,\"Distance\") -> list of floats
-projectPoint(Vector,\"Parameters\") -> list of tuples of floats
-projectPoint(Vector,\"Point\") -> list of points
+projectPoint(Point=Vector,[Method="NearestPoint"])
+projectPoint(Vector,"NearestPoint") -> Vector
+projectPoint(Vector,"LowerDistance") -> float
+projectPoint(Vector,"LowerDistanceParameters") -> tuple of floats (u,v)
+projectPoint(Vector,"Distance") -> list of floats
+projectPoint(Vector,"Parameters") -> list of tuples of floats
+projectPoint(Vector,"Point") -> list of points
 </UserDocu>
             </Documentation>
         </Methode>

src/Mod/Path/App/AreaPy.xml

@@ -13,8 +13,10 @@
       Delete="true">
     <Documentation>
       <Author Licence="LGPL" Name="Zheng, Lei" EMail="realthunder.dev@gmail.com" />
-      <UserDocu>FreeCAD python wrapper of libarea\n
-Path.Area(key=value ...)\n
+      <UserDocu>FreeCAD python wrapper of libarea
+
+Path.Area(key=value ...)
+
 The constructor accepts the same parameters as setParams(...) to configure the object
 All arguments are optional.</UserDocu>
     </Documentation>
@@ -25,7 +27,8 @@ All arguments are optional.</UserDocu>
     </Methode>
     <Methode Name="setPlane">
       <Documentation>
-          <UserDocu>setPlane(shape): Set the working plane.\n
+          <UserDocu>setPlane(shape): Set the working plane.
+
 The supplied shape does not need to be planar. Area will try to find planar
 sub-shape (face, wire or edge). If more than one planar sub-shape is found, it
 will prefer the top plane parallel to XY0 plane. If no working plane are set,
@@ -35,9 +38,13 @@ same algorithm</UserDocu>
     </Methode>
     <Methode Name="getShape" Keyword='true'>
       <Documentation>
-          <UserDocu>getShape(index=-1,rebuild=False): Return the resulting shape\n
-\n* index (-1): the index of the section. -1 means all sections. No effect on planar shape.\n
-\n* rebuild: clean the internal cache and rebuild</UserDocu>
+          <UserDocu>getShape(index=-1,rebuild=False): Return the resulting shape
+
+
+* index (-1): the index of the section. -1 means all sections. No effect on planar shape.
+
+
+* rebuild: clean the internal cache and rebuild</UserDocu>
       </Documentation>
     </Methode>
     <Methode Name="makeOffset" Keyword='true'>

src/Mod/Path/App/FeatureAreaPy.xml

@@ -20,7 +20,8 @@
         </Methode>
         <Methode Name="setParams" Keyword="true">
             <Documentation>
-                <UserDocu>setParams(key=value...): Convenient function to configure this feature.\n
+                <UserDocu>setParams(key=value...): Convenient function to configure this feature.
+
 Same usage as Path.Area.setParams(). This function stores the parameters in the properties.</UserDocu>
             </Documentation>
         </Methode>

src/Mod/Path/PathSimulator/App/PathSimPy.xml

@@ -13,35 +13,46 @@
       Delete="true">
     <Documentation>
       <Author Licence="LGPL" Name="Shai Seger" EMail="shaise_at_g-mail" />
-      <UserDocu>FreeCAD python wrapper of PathSimulator\n
-PathSimulator.PathSim():\n
-Create a path simulator object\n</UserDocu>
+      <UserDocu>FreeCAD python wrapper of PathSimulator
+
+PathSimulator.PathSim():
+
+Create a path simulator object
+</UserDocu>
     </Documentation>
     <Methode Name="BeginSimulation" Keyword='true'>
       <Documentation>
-          <UserDocu>BeginSimulation(stock, resolution):\n
-Start a simulation process on a box shape stock with given resolution\n</UserDocu>
+          <UserDocu>BeginSimulation(stock, resolution):
+
+Start a simulation process on a box shape stock with given resolution
+</UserDocu>
       </Documentation>
     </Methode>
     <Methode Name="SetToolShape">
       <Documentation>
-          <UserDocu>SetToolShape(shape):\n
-Set the shape of the tool to be used for simulation\n</UserDocu>
+          <UserDocu>SetToolShape(shape):
+
+Set the shape of the tool to be used for simulation
+</UserDocu>
       </Documentation>
     </Methode>
     <Methode Name="GetResultMesh">
       <Documentation>
         <UserDocu>
-          GetResultMesh():\n
-          Return the current mesh result of the simulation.\n
+          GetResultMesh():
+
+          Return the current mesh result of the simulation.
+
         </UserDocu>
       </Documentation>
     </Methode>
     <Methode Name="ApplyCommand" Keyword='true'>
       <Documentation>
         <UserDocu>
-          ApplyCommand(placement, command):\n
-          Apply a single path command on the stock starting from placement.\n
+          ApplyCommand(placement, command):
+
+          Apply a single path command on the stock starting from placement.
+
         </UserDocu>
       </Documentation>
     </Methode>