2.5: multiple small fixes

- wm draw method is now initialized correct when reading older
  files, but the SDNA bug causing the problem is still unsolved.
  is due to // char pad[8]; not being recognized as commented.
- triple buffer proxy texture test follows spec better now,
  was disabling triple buffer unnecessarily on some drivers.
- some cmake compile fixes related to sequencer pthread usage
  and removed bad level calls lib for player.
- show outliner header buttons in oops mode as well until that
  can be switched in the UI.
- fix region data free issue for tooltips
- warning fixes

2 files changed, 7 insertions, 6 deletions

diff --git a/source/blender/blenlib/intern/arithb.c b/source/blender/blenlib/intern/arithb.c
index a21252d9aa8..a9e1e80a403 100644
--- a/source/blender/blenlib/intern/arithb.c
+++ b/source/blender/blenlib/intern/arithb.c
@@ -34,6 +34,7 @@
 
 /* ************************ FUNKTIES **************************** */
 
+#include <stdlib.h>
 #include <math.h>
 #include <sys/types.h>
 #include <string.h> 
@@ -62,13 +63,13 @@
 #define SWAP(type, a, b)	{ type sw_ap; sw_ap=(a); (a)=(b); (b)=sw_ap; }
 #define CLAMP(a, b, c)		if((a)<(b)) (a)=(b); else if((a)>(c)) (a)=(c)
 
-
-#if defined(WIN32) || defined(__APPLE__)
-#include <stdlib.h>
+#ifndef M_PI
 #define M_PI 3.14159265358979323846
-#define M_SQRT2 1.41421356237309504880   
+#endif
 
-#endif /* defined(WIN32) || defined(__APPLE__) */
+#ifndef M_SQRT2
+#define M_SQRT2 1.41421356237309504880   
+#endif
 
 
 float saacos(float fac)
diff --git a/source/blender/blenlib/intern/graph.c b/source/blender/blenlib/intern/graph.c
index 03a565ef0bf..de9c8860c6a 100644
--- a/source/blender/blenlib/intern/graph.c
+++ b/source/blender/blenlib/intern/graph.c
@@ -279,7 +279,7 @@ void BLI_removeDoubleNodes(BGraph *graph, float limit)
 BNode * BLI_FindNodeByPosition(BGraph *graph, float *p, float limit)
 {
 	BNode *closest_node = NULL, *node;
-	float min_distance;
+	float min_distance = 0.0f;
 	
 	for(node = graph->nodes.first; node; node = node->next)
 	{