Add gitclean and distclean options to /tools/Makefile

tools/Makefile

@@ -1 +1,23 @@
 all: codeprop tunslip
+
+gitclean:
+	@git clean -d -x -n ..
+	@echo "Enter yes to delete these files";
+	@read response;if [[ "$$response" = "yes" ]]; then git clean -d -f -x ..;fi;
+
+distclean: cleanobj cleanfiles cleantargets cleandone
+cleanobj:
+	${info Removing obj_* directories...}
+	@find ../examples/ -name "obj_*" -print -exec rm -R '{}' +
+cleanfiles:
+	${info Removing .map, .co, .ce, contiki*.a files...}
+	@find ../examples -name "*.map" -print -delete
+	@find ../examples -name "*.co" -print -delete
+	@find ../examples -name "*.ce" -print -delete
+	@find ../examples -name "contiki-*.a" -delete 
+cleantargets:
+	${info Removing .TARGET builds...}
+	@rm -f -v ${addprefix ../examples/*/*., ${shell ls ../platform/}}
+	@rm -f -v ${addprefix ../examples/*/*/*., ${shell ls ../platform/}}
+cleandone:
+	@echo ${info All done!}