Merge pull request #4810 from mainerror/2.1.1-wip

Makefile misses a 'clean' directive

Makefile

@@ -50,6 +50,13 @@ test:
 	kill -9 `cat js/tests/pid.txt`
 	rm js/tests/pid.txt
 
+#
+# CLEANS THE ROOT DIRECTORY OF PRIOR BUILDS
+#
+
+clean:
+	rm -r bootstrap
+
 #
 # BUILD SIMPLE BOOTSTRAP DIRECTORY
 # recess & uglifyjs are required