UNUSED() macro so -Wunused-parameter can be used with GCC without so many warnings.

applied to python api and exotic.c, removed some args being passed down which were not needed.

keyword args for new mathutils types were being ignored when they should raise an error.

source/blender/python/intern/bpy_interface.c

@@ -43,6 +43,7 @@
 #include "BLI_math_base.h"
 #include "BLI_string.h"
 
+#include "BKE_utildefines.h"
 #include "BKE_context.h"
 #include "BKE_text.h"
 #include "BKE_font.h" /* only for utf8towchar */
@@ -104,7 +105,8 @@ void bpy_context_set(bContext *C, PyGILState_STATE *gilstate)
 	}
 }
 
-void bpy_context_clear(bContext *C, PyGILState_STATE *gilstate)
+/* context should be used but not now because it causes some bugs */
+void bpy_context_clear(bContext *UNUSED(C), PyGILState_STATE *gilstate)
 {
 	py_call_level--;