* errors in bpyui draw scripts were segfaulting

* added PyLineSpit(), useful for debugging so you can easily find the 
line of the python script running.

source/blender/python/intern/bpy_interface.c

@@ -168,10 +168,11 @@ int BPY_run_script_space_draw(bContext *C, SpaceScript * sc)
 	if (bpy_run_script_init(C, sc)) {
 		PyGILState_STATE gilstate = PyGILState_Ensure();
 		PyObject *result = PyObject_CallObject( sc->script->py_draw, NULL );
-		PyGILState_Release(gilstate);
 		
 		if (result==NULL)
 			exit_pydraw(sc, 1);
+			
+		PyGILState_Release(gilstate);
 	}
 	return 1;
 }
@@ -183,10 +184,11 @@ int BPY_run_script_space_listener(bContext *C, SpaceScript * sc)
 		PyGILState_STATE gilstate = PyGILState_Ensure();
 		
 		PyObject *result = PyObject_CallObject( sc->script->py_draw, NULL );
-		PyGILState_Release(gilstate);
 		
 		if (result==NULL)
 			exit_pydraw(sc, 1);
+			
+		PyGILState_Release(gilstate);
 	}
 	return 1;
 }

source/blender/python/intern/bpy_util.c

@@ -162,6 +162,16 @@ void PyObSpit(char *name, PyObject *var) {
 	fprintf(stderr, "\n");
 }
 
+void PyLineSpit(void) {
+	char filename[512];
+	int lineno;
+
+	PyErr_Clear();
+	BPY_getFileAndNum(&filename, &lineno);
+	
+	fprintf(stderr, "%s:%d\n", filename, lineno);
+}
+
 void BPY_getFileAndNum(char **filename, int *lineno)
 {
 	PyObject *getframe, *frame;

source/blender/python/intern/bpy_util.h

@@ -35,4 +35,5 @@ PyObject *BPY_flag_to_list(BPY_flag_def *flagdef, int flag);
 int BPY_flag_from_seq(BPY_flag_def *flagdef, PyObject *seq, int *flag);
 
 void PyObSpit(char *name, PyObject *var);
+void PyLineSpit(void);
 void BPY_getFileAndNum(char **filename, int *lineno);