add icons utility make target.

GNUmakefile

@@ -184,6 +184,7 @@ help:
 	@echo "  * check_spelling_py    - check for spelling errors (Python only)"
 	@echo ""
 	@echo "Utilities (not associated with building blender)"
+	@echo "  * icons    - updates PNG icons from SVG files."
 	@echo "  * tbz      - create a compressed svn export 'blender_archive.tar.bz2'"
 	@echo ""
 	@echo "Documentation Targets (not associated with building blender)"
@@ -322,6 +323,10 @@ tbz:
 	rm -rf blender_archive/
 	@echo "blender_archive.tar.bz2 written"
 
+icons:
+	$(BLENDER_DIR)/release/datafiles/blender_icons.sh
+	$(BLENDER_DIR)/release/datafiles/prvicons.sh
+
 
 # -----------------------------------------------------------------------------
 # Documentation

release/datafiles/blender_icons.sh

 #!/bin/sh
 # This script updates icons from the SVG file
 
-inkscape blender_icons.svg --export-dpi=90  --without-gui --export-png=blender_icons16.png
-inkscape blender_icons.svg --export-dpi=180 --without-gui --export-png=blender_icons32.png
+BASEDIR=$(dirname $0)
+
+inkscape $BASEDIR/blender_icons.svg --export-dpi=90  --without-gui --export-png=$BASEDIR/blender_icons16.png
+inkscape $BASEDIR/blender_icons.svg --export-dpi=180 --without-gui --export-png=$BASEDIR/blender_icons32.png
+

release/datafiles/prvicons.sh

 #!/bin/sh
 # This script updates icons from the SVG file
 
-inkscape prvicons.svg --without-gui --export-png=prvicons.png
+BASEDIR=$(dirname $0)
+
+inkscape $BASEDIR/prvicons.svg --without-gui --export-png=$BASEDIR/prvicons.png
+