Remove all trailing spaces

No real changes, just clean up sources by removing trailing spaces from
all the non-generated files.

This should hopefully avoid future commits mixing significant changes
with insignificant whitespace ones.

docs/doxygen/scripts/swig_tools.py

@@ -11,13 +11,13 @@ class SWIGBuilder:
         output_dir = os.path.abspath(os.path.join(self.output_dir, "swig"))
         if not os.path.exists(output_dir):
             os.makedirs(output_dir)
-    
+
         for aclass in self.doxyparser.classes:
             header_name = aclass.name[2:].lower()
             if aclass.name in excluded_classes:
                 #print "Skipping %s" % aclass.name
                 continue
-                
+
             filename = os.path.join(output_dir, "_" + header_name + ".i")
             enums_text = make_enums(aclass)
             method_text = self.make_swig_methods(aclass)
@@ -37,25 +37,25 @@ public:
             afile.write(text)
             afile.close()
 
-        
+
     def make_swig_methods(self, aclass):
         retval = ""
-        
+
         retval += """
     %%pythonAppend %s    "self._setOORInfo(self)"
     %%pythonAppend %s() ""
     %%typemap(out) %s*; // turn off this typemap
     """ % (aclass.name, aclass.name, aclass.name)
-    
+
         for amethod in aclass.constructors:
             retval += "    %s%s;\n\n" % (amethod.name, amethod.argsstring)
-            
+
         retval += """
         // Turn it back on again
-        %%typemap(out) %s* { $result = wxPyMake_wxObject($1, $owner); } 
+        %%typemap(out) %s* { $result = wxPyMake_wxObject($1, $owner); }
     """ % aclass.name
-    
+
         for amethod in aclass.methods:
             retval += "    %s %s%s;\n\n" % (amethod.return_type, amethod.name, amethod.argsstring)
-        
+
         return retval