Misc. typos

+ some are doxy others are just comment code.  
+ some minor whitespace and grammatical tweaks. 
+ app/SCL/* typos have also been submitted upstream (https://github.com/stepcode/stepcode/pull/366). So it's ok to merge them in to master.

src/Mod/Mesh/App/Core/Elements.h

@@ -281,7 +281,7 @@ public:
    * Therefore the two facets must be adjacent.
    */
   inline bool HasSameOrientation(const MeshFacet&) const;
-  /** Checks wether the facet is degenerated to a line of point. */
+  /** Checks whether the facet is degenerated to a line of point. */
   inline bool IsDegenerated() const;
   /** Flips the orientation of the facet. */
   void FlipNormal (void)

src/Mod/Mesh/App/Core/MeshIO.h

@@ -129,7 +129,7 @@ protected:
 };
 
 /**
- * The MeshOutput class is able to write a mesh object to an ouput stream
+ * The MeshOutput class is able to write a mesh object to an output stream
  * on various formats.
  */
 class MeshExport MeshOutput

src/Mod/Mesh/App/Core/tritritest.h

@@ -138,7 +138,7 @@
 #define POINT_IN_TRI(V0,U0,U1,U2)           \
 {                                           \
   float a,b,c,d0,d1,d2;                     \
-  /* is T1 completly inside T2? */          \
+  /* is T1 completely inside T2? */         \
   /* check if V0 is inside tri(U0,U1,U2) */ \
   a=U1[i1]-U0[i1];                          \
   b=-(U1[i0]-U0[i0]);                       \

src/Mod/Mesh/App/FeatureMeshCurvature.h

@@ -48,7 +48,7 @@ public:
     App::PropertyLink Source;
     PropertyCurvatureList CurvInfo;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     App::DocumentObjectExecReturn *execute(void);

src/Mod/Mesh/App/FeatureMeshImport.h

@@ -46,7 +46,7 @@ public:
 
   App::PropertyFile FileName;
 
-  /** @name methods overide Feature */
+  /** @name methods override Feature */
   //@{
   /// recalculate the Feature
   App::DocumentObjectExecReturn *execute(void);

src/Mod/Mesh/App/FeatureMeshSegmentByMesh.h

@@ -53,7 +53,7 @@ public:
   App::PropertyVector Normal;
 
 
-  /** @name methods overide Feature */
+  /** @name methods override Feature */
   //@{
   /// recalculate the Feature
   App::DocumentObjectExecReturn *execute(void);

src/Mod/Mesh/App/FeatureMeshSetOperations.h

@@ -51,7 +51,7 @@ public:
     App::PropertyLink   Source2;
     App::PropertyString OperationType;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     App::DocumentObjectExecReturn *execute(void);

src/Mod/Mesh/App/FeatureMeshTransform.h

@@ -49,7 +49,7 @@ public:
   App::PropertyMatrix Position;
 
 
-  /** @name methods overide Feature */
+  /** @name methods override Feature */
   //@{
   /// recalculate the Feature
   virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Mesh/App/FeatureMeshTransformDemolding.h

@@ -48,7 +48,7 @@ public:
     App::PropertyFloat Rotation;
     App::PropertyVector Axis;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Mesh/App/GTSAlgos.cpp

@@ -91,7 +91,7 @@ void GTSAlgos::boolean(const Mesh::MeshObject& ToolMesh, int Type)
   s1 = GTSAlgos::createGTSSurface(_Mesh);
   s2 = GTSAlgos::createGTSSurface(ToolMesh);
 
-  // clear the mesh (mermory)
+  // clear the mesh (memory)
   //Mesh1.clear();
   //Mesh2.clear();
 

src/Mod/Mesh/App/MeshFeature.h

@@ -66,7 +66,7 @@ public:
     PropertyMeshKernel Mesh;
     //@}
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);