Add NSOpenPanel and NSSavePanel obsolete methods in 10.6 	-> Lets code run on 10.5 systems
Add NSOpenPanel and NSSavePanel obsolete methods in 10.6
	-> Lets code run on 10.5 systems

Add NSSavePanel completion-based APIs as well (10.6)

Fix casing of URL -> Url

dlech/monomac,PlayScriptRedux/monomac,kangaroo/monomac