remove unused code, comment some that may be useful (maintainers can remove).

source/blender/blenlib/intern/BLI_kdopbvh.c

@@ -1687,13 +1687,13 @@ static void dfs_range_query(RangeQueryData *data, BVHNode *node)
 {
 	if(node->totnode == 0)
 	{
-
+#if 0	/*UNUSED*/
 		//Calculate the node min-coords (if the node was a point then this is the point coordinates)
 		float co[3];
 		co[0] = node->bv[0];
 		co[1] = node->bv[2];
 		co[2] = node->bv[4];
-
+#endif
 	}
 	else
 	{

source/blender/blenlib/intern/pbvh.c

@@ -1437,7 +1437,7 @@ int BLI_pbvh_node_planes_contain_AABB(PBVHNode *node, void *data)
 {
 	float (*planes)[4] = data;
 	int i, axis;
-	float vmin[3], vmax[3], bb_min[3], bb_max[3];
+	float vmin[3] /*, vmax[3]*/, bb_min[3], bb_max[3];
 
 	BLI_pbvh_node_get_BB(node, bb_min, bb_max);
 
@@ -1445,11 +1445,11 @@ int BLI_pbvh_node_planes_contain_AABB(PBVHNode *node, void *data)
 		for(axis = 0; axis < 3; ++axis) {
 			if(planes[i][axis] > 0) { 
 				vmin[axis] = bb_min[axis];
-				vmax[axis] = bb_max[axis];
+				/*vmax[axis] = bb_max[axis];*/ /*UNUSED*/
 			}
 			else {
 				vmin[axis] = bb_max[axis];
-				vmax[axis] = bb_min[axis];
+				/*vmax[axis] = bb_min[axis];*/ /*UNUSED*/
 			}
 		}
 		

source/blender/blenloader/intern/readfile.c

@@ -2115,7 +2115,7 @@ static void lib_verify_nodetree(Main *main, int UNUSED(open))
 	}
 	
 	{
-		int has_old_groups=0;
+		/*int has_old_groups=0;*/ /*UNUSED*/
 		/* XXX this should actually be part of do_versions, but since we need
 		 * finished library linking, it is not possible there. Instead in do_versions
 		 * we have set the NTREE_DO_VERSIONS flag, so at this point we can do the
@@ -2125,7 +2125,7 @@ static void lib_verify_nodetree(Main *main, int UNUSED(open))
 			if (ntree->flag & NTREE_DO_VERSIONS) {
 				/* this adds copies and links from all unlinked internal sockets to group inputs/outputs. */
 				nodeGroupExposeAllSockets(ntree);
-				has_old_groups = 1;
+				/*has_old_groups = 1;*/ /*UNUSED*/
 			}
 		}
 		/* now verify all types in material trees, groups are set OK now */

source/blender/editors/animation/keyframes_draw.c

@@ -372,7 +372,7 @@ static void add_bezt_to_keyblocks_list(DLRBT_Tree *blocks, DLRBT_Tree *beztTree,
 		blocks->root= (DLRBT_Node *)new_ab;
 	}
 	else {
-		ActKeyBlock *ab, *abp=NULL, *abn=NULL;
+		ActKeyBlock *ab, *abn=NULL;
 		
 		/* try to find a keyblock that starts on the previous beztriple, and add a new one if none start there
 		 * Note: we can't search from end to try to optimise this as it causes errors there's
@@ -382,7 +382,7 @@ static void add_bezt_to_keyblocks_list(DLRBT_Tree *blocks, DLRBT_Tree *beztTree,
 		//		A|--------------|A ______________ B|--------------|B
 		//		A|------------------------------------------------|A
 		//		A|----|A|---|A|-----------------------------------|A
-		for (ab= blocks->root; ab; abp= ab, ab= abn) {
+		for (ab= blocks->root; ab; ab= abn) {
 			/* check if this is a match, or whether we go left or right */
 			if (ab->start == prev->vec[1][0]) {
 				/* set selection status and 'touched' status */

source/blender/editors/physics/particle_edit.c

@@ -3460,7 +3460,7 @@ static void brush_edit_apply(bContext *C, wmOperator *op, PointerRNA *itemptr)
 	ParticleBrushData *brush= &pset->brush[pset->brushtype];
 	ARegion *ar= CTX_wm_region(C);
 	float vec[3], mousef[2];
-	int mval[2], mvalo[2];
+	int mval[2];
 	int flip, mouse[2], dx, dy, removed= 0, added=0, selected= 0;
 	int lock_root = pset->flag & PE_LOCK_FIRST;
 
@@ -3483,8 +3483,6 @@ static void brush_edit_apply(bContext *C, wmOperator *op, PointerRNA *itemptr)
 	mval[0]= mouse[0];
 	mval[1]= mouse[1];
 
-	mvalo[0]= bedit->lastmouse[0];
-	mvalo[1]= bedit->lastmouse[1];
 
 	/* disable locking temporatily for disconnected hair */
 	if(edit->psys && edit->psys->flag & PSYS_GLOBAL_HAIR)

source/blender/editors/screen/screen_edit.c

@@ -1595,12 +1595,12 @@ ScrArea *ED_screen_full_toggle(bContext *C, wmWindow *win, ScrArea *sa)
 
 	if(sa && sa->full) {
 		ScrArea *old;
-		short fulltype;
+		/*short fulltype;*/ /*UNUSED*/
 
 		sc= sa->full;		/* the old screen to restore */
 		oldscreen= win->screen;	/* the one disappearing */
 
-		fulltype = sc->full;
+		/*fulltype = sc->full;*/
 		sc->full= 0;
 
 		/* removed: SCREENAUTOPLAY exception here */

source/blender/gpu/intern/gpu_material.c

@@ -900,7 +900,7 @@ static void do_material_tex(GPUShadeInput *shi)
 	GPUNodeLink *texco_norm, *texco_orco, *texco_object;
 	GPUNodeLink *texco_global, *texco_uv = NULL;
 	GPUNodeLink *newnor, *orn;
-	char *lastuvname = NULL;
+	/*char *lastuvname = NULL;*/ /*UNUSED*/
 	float one = 1.0f, norfac, ofs[3];
 	int tex_nr, rgbnor, talpha;
 	int init_done = 0, iBumpSpacePrev;
@@ -947,7 +947,7 @@ static void do_material_tex(GPUShadeInput *shi)
 			else if(mtex->texco==TEXCO_UV) {
 				if(1) { //!(texco_uv && strcmp(mtex->uvname, lastuvname) == 0)) {
 					GPU_link(mat, "texco_uv", GPU_attribute(CD_MTFACE, mtex->uvname), &texco_uv);
-					lastuvname = mtex->uvname;
+					/*lastuvname = mtex->uvname;*/ /*UNUSED*/
 				}
 				texco= texco_uv;
 			}

source/blender/imbuf/intern/targa.c

@@ -532,7 +532,7 @@ struct ImBuf *imb_loadtarga(unsigned char *mem, size_t mem_size, int flags)
 	TARGA tga;
 	struct ImBuf * ibuf;
 	int col, count, size;
-	unsigned int *rect, *cmap= NULL, mincol= 0, maxcol= 0;
+	unsigned int *rect, *cmap= NULL /*, mincol= 0*/, maxcol= 0;
 	uchar * cp = (uchar *) &col;
 	
 	if (checktarga(&tga,mem) == 0) return(NULL);
@@ -550,7 +550,7 @@ struct ImBuf *imb_loadtarga(unsigned char *mem, size_t mem_size, int flags)
 	
 	if (tga.mapsize){
 		/* load color map */
-		mincol = tga.maporig;
+		/*mincol = tga.maporig;*/ /*UNUSED*/
 		maxcol = tga.mapsize;
 		cmap = MEM_callocN(sizeof(unsigned int)*maxcol, "targa cmap");
 

source/blender/makesdna/intern/makesdna.c

@@ -855,12 +855,13 @@ void dna_write(FILE *file, void *pntr, int size)
 
 void printStructLenghts(void)
 {
-	int a, unknown= nr_structs, lastunknown, structtype;
+	int a, unknown= nr_structs, structtype;
+	/*int lastunknown;*/ /*UNUSED*/
 	short *structpoin;
 	printf("\n\n*** All detected structs:\n");
 
 	while(unknown) {
-		lastunknown= unknown;
+		/*lastunknown= unknown;*/ /*UNUSED*/
 		unknown= 0;
 		
 		/* check all structs... */