Header file clean up and warning fixes

- Mostly this cleans up the #includes and header files in the python project.
- Warning fixes are mostly casting issues and misc fixes. General warning clean up.
- #include Python.h MUST come as the first include to avoid the POSIX redefine warning in the unix makefiles
- fno-strict-aliasing flag added to makefile to fix a unavoidable type punning warning in types.c

source/blender/python/api2_2x/Sound.h

@@ -34,13 +34,14 @@
 #define EXPP_SOUND_H
 
 #include <Python.h>
-#include <DNA_sound_types.h>
+#include "DNA_sound_types.h"
 
 /*****************************************************************************/
 /* Python BPy_Sound structure definition                                     */
 /*****************************************************************************/
 typedef struct {
-	PyObject_HEAD bSound * sound;
+	PyObject_HEAD 
+	bSound * sound;
 } BPy_Sound;
 
 /*****************************************************************************/