Made some efficiency improvements to NSURL:
1. No need to call Cocoa.StringConstant, so we can simply use plain String constants instead.
2. With that, the KeyList is not necessary any more, either.
3. One of the predefined Keys was wrong (probably copy/paste error).
4. The ResourceValue() function doesn't invoke Cocoa.NSObjectFromNSPtr() any more but returns a Ptr, because the caller knows the expected type anyway, so the caller shall perform this operation.
Merge pull request #109 from tempelmann/master

Made some efficiency improvements to NSURL:
1. No need to call Cocoa.StringConstant, so we can simply use plain String constants instead.
2. With that, the KeyList is not necessary any more, either.
3. One of the predefined Keys was wrong (probably copy/paste error).
4. The ResourceValue() function doesn't invoke Cocoa.NSObjectFromNSPtr() any more but returns a Ptr, because the caller knows the expected type anyway, so the caller shall perform this operation.
Updates version to 159
Merge pull request #110 from tempelmann/master

Updates version to 159
Removes obsolete IK... files from root folder
Merge pull request #111 from tempelmann/master

Removes obsolete IK... files from root folder