2 utility functions added for projection painting.

* BLI_linklist_index() - to get an items index in a  LinkList
* BLI_memarena_use_malloc() - BLI_memarena_use_calloc alredy existed but there was no way to switch back to malloc.

also added texnodes to cmake

source/blender/blenlib/BLI_linklist.h

@@ -45,6 +45,7 @@ typedef struct LinkNode {
 } LinkNode;
 
 int		BLI_linklist_length		(struct LinkNode *list);
+int		BLI_linklist_index		(struct LinkNode *list, void *ptr);
 
 void	BLI_linklist_reverse	(struct LinkNode **listp);
 

source/blender/blenlib/BLI_memarena.h

@@ -50,6 +50,7 @@ typedef struct MemArena MemArena;
 struct MemArena*	BLI_memarena_new	(int bufsize);
 void				BLI_memarena_free	(struct MemArena *ma);
 
+void				BLI_memarena_use_malloc (struct MemArena *ma);
 void				BLI_memarena_use_calloc (struct MemArena *ma);
 
 void*				BLI_memarena_alloc	(struct MemArena *ma, int size);

source/blender/blenlib/intern/BLI_linklist.c

@@ -50,6 +50,18 @@ int BLI_linklist_length(LinkNode *list) {
 	}
 }
 
+int BLI_linklist_index(struct LinkNode *list, void *ptr)
+{
+	int index;
+	
+	for (index = 0; list; list= list->next, index++) {
+		if (list->link == ptr)
+			return index;
+	}
+	
+	return -1;
+}
+
 void BLI_linklist_reverse(LinkNode **listp) {
 	LinkNode *rhead= NULL, *cur= *listp;
 	

source/blender/blenlib/intern/BLI_memarena.c

@@ -60,6 +60,10 @@ void BLI_memarena_use_calloc(MemArena *ma) {
 	ma->use_calloc= 1;
 }
 
+void BLI_memarena_use_malloc(MemArena *ma) {
+	ma->use_calloc= 0;
+}
+
 void BLI_memarena_free(MemArena *ma) {
 	BLI_linklist_free(ma->bufs, (void(*)(void*)) MEM_freeN);
 	MEM_freeN(ma);

source/blender/nodes/CMakeLists.txt

@@ -23,7 +23,7 @@
 #
 # ***** END GPL LICENSE BLOCK *****
 
-FILE(GLOB SRC intern/*.c intern/CMP_nodes/*.c intern/SHD_nodes/*.c)
+FILE(GLOB SRC intern/*.c intern/CMP_nodes/*.c intern/SHD_nodes/*.c intern/TEX_nodes/*.c)
 
 SET(INC 
   . ../../../intern/guardedalloc ../include ../blenlib ../makesdna