Revert changes from main commits that were merged into blender-v4.1-release

The last good commit was f57e4c5b98.

After this one more fix was committed, this one is preserved as well:
67bd678887.

source/blender/python/generic/bgl.cc

@@ -24,7 +24,7 @@
 
 #include "py_capi_utils.h"
 
-#include "BKE_global.hh"
+#include "BKE_global.h"
 
 #include "../generic/py_capi_utils.h"
 

source/blender/python/generic/bl_math_py_api.cc

@@ -13,6 +13,8 @@
 
 #include "BLI_utildefines.h"
 
+#include "py_capi_utils.h"
+
 #include "bl_math_py_api.h"
 
 /* -------------------------------------------------------------------- */

source/blender/python/generic/bpy_threads.cc

@@ -12,6 +12,7 @@
 #include <Python.h>
 
 #include "../BPY_extern.h"
+#include "BLI_utildefines.h"
 
 BPy_ThreadStatePtr BPY_thread_save()
 {