renaming blf_api.h to blf_py_api.h

In windows this was producing Linking dependence errors because we have BLF_api.h in the /blenfont/ and blf_api.h in /python/generic/. It doesn't produces crash out of the box but I was trying to link both "api" files to the same project (Ketjsi folder). For the linking order was determining what header to use. A workaround is to "include" the file using some ../../ relative folder. But renaming it is less error prone.

Probably Ketsji folder shouldn't link to BLF_api.h anyways, but this is something I will look better later before another commit. In the mean time it's not a good idea to have 2 api files with the same name (for non case-sensitive systems).

source/blender/python/generic/CMakeLists.txt

@@ -31,7 +31,7 @@ set(INC
 set(SRC
 	IDProp.c
 	bgl.c
-	blf_api.c
+	blf_py_api.c
 	bpy_internal_import.c
 	mathutils.c
 	mathutils_color.c
@@ -45,7 +45,7 @@ set(SRC
 
 	IDProp.h
 	bgl.h
-	blf_api.h
+	blf_py_api.h
 	bpy_internal_import.h
 	mathutils.h
 	mathutils_color.h

source/blender/python/generic/blf_py_api.c

@@ -23,7 +23,7 @@
  */
 
 #include <Python.h>
-#include "blf_api.h"
+#include "blf_py_api.h"
 
 #include "../../blenfont/BLF_api.h"
 #include "BKE_utildefines.h"

source/blender/python/intern/bpy.c

@@ -44,7 +44,7 @@
  /* external util modules */
 #include "../generic/mathutils.h"
 #include "../generic/bgl.h"
-#include "../generic/blf_api.h"
+#include "../generic/blf_py_api.h"
 #include "../generic/IDProp.h"
 
 #include "AUD_PyInit.h"

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -51,7 +51,7 @@ extern "C" {
 	#include "py_capi_utils.h"
 	#include "mathutils.h" // Blender.Mathutils module copied here so the blenderlayer can use.
 	#include "bgl.h"
-	#include "blf_api.h"
+	#include "blf_py_api.h"
 
 	#include "marshal.h" /* python header for loading/saving dicts */
 }