Assorted 2.5 fixes:

- compiling errors in outliner.c
- incorrect comments

source/blender/blenkernel/intern/fcurve.c

@@ -1258,8 +1258,11 @@ static FModifierTypeInfo FMI_MODNAME = {
 
 /* Utilities For F-Curve Modifiers ---------------------- */
 
-/* Recalculate the F-Curve at evaltime, as modified by the given F-Curve */
-// TODO: this isn't really such an elegant solution for time-modifying F-Modifiers, but it gets too difficult otherwise for now...
+/* Recalculate the F-Curve at evaltime, as modified by the given F-Curve 
+ * 
+ * While this may sound wrong (and be potentially very slow), it is invalid for F-Curve modifiers to actually
+ * modify the evaltime in such a way that those after it will end up evaluating in the wrong time space.
+ */
 static float fcm_reevaluate_fcurve (FCurve *fcu, FModifier *fcm, float cvalue, float evaltime)
 { 
 	ListBase modifiers = {NULL, NULL};

source/blender/editors/space_outliner/outliner.c

@@ -100,6 +100,7 @@
 #include "RNA_access.h"
 
 #include "ED_armature.h"
+#include "ED_keyframing.h"
 #include "ED_object.h"
 #include "ED_screen.h"
 
@@ -3270,7 +3271,6 @@ static void do_outliner_drivers_editop(SpaceOops *soops, ListBase *tree, short m
 static int outliner_drivers_addsel_exec(bContext *C, wmOperator *op)
 {
 	SpaceOops *soutliner= (SpaceOops*)CTX_wm_space_data(C);
-	Scene *scene= CTX_data_scene(C);
 	
 	/* check for invalid states */
 	if (soutliner == NULL)
@@ -3306,7 +3306,6 @@ void OUTLINER_OT_drivers_add(wmOperatorType *ot)
 static int outliner_drivers_deletesel_exec(bContext *C, wmOperator *op)
 {
 	SpaceOops *soutliner= (SpaceOops*)CTX_wm_space_data(C);
-	Scene *scene= CTX_data_scene(C);
 	
 	/* check for invalid states */
 	if (soutliner == NULL)

source/blender/python/intern/bpy_interface.c

@@ -560,7 +560,7 @@ float BPY_pydriver_eval (ChannelDriver *driver)
 		}
 	}
 	
-	/* add target values to a py dictionary that we add to the drivers dict as 'd' */
+	/* add target values to a dict that will be used as '__locals__' dict */
 	driver_vars = PyDict_New(); // XXX do we need to decref this?
 	for (dtar= driver->targets.first; dtar; dtar= dtar->next) {
 		PyObject *driver_arg = NULL;
@@ -569,11 +569,10 @@ float BPY_pydriver_eval (ChannelDriver *driver)
 		/* try to get variable value */
 		tval= driver_get_target_value(driver, dtar);
 		driver_arg= PyFloat_FromDouble((double)tval);
-		if (driver_arg == NULL) continue;
 		
 		/* try to add to dictionary */
 		if (PyDict_SetItemString(driver_vars, dtar->name, driver_arg)) {
-			/* this target failed */
+			/* this target failed - bad name */
 			if (targets_ok) {
 				/* first one - print some extra info for easier identification */
 				fprintf(stderr, "\nBPY_pydriver_eval() - Error while evaluating PyDriver:\n");