Use quotes around the include paths

On windows, the include folders are in C:/Program Files (x86)/Microsoft Visual Studio XX.X/,
which contains space.

Author: iMichka

pygccxml/parser/source_reader.py

@@ -155,7 +155,7 @@ def __create_command_line_castxml(self, source_file, xmlfile):
 
         # Add additional includes directories
         dirs = self.__search_directories
-        cmd.append(''.join([' -I%s' % search_dir for search_dir in dirs]))
+        cmd.append(''.join([' -I"%s"' % search_dir for search_dir in dirs]))
 
         # Clang option: -c Only run preprocess, compile, and assemble steps
         cmd.append("-c")