Added NSRegularExpression, NSTextCheckingResult, etc.

- Added NSRegularExpression and NSTextCheckingResult classes.
- Added Cocoa.NSIntegerMax and Cocoa.NSNotFound methods as pseudo-constants.
- Replaced some deprecated calls in case they are removed by a newer version of Xojo.
- Added NSError.Operator_Convert to a MacOSError so you can raise new NSError( id, true ).
- Removed or added pragmas for unused variables and parameters.
- Corrected Windows/Linux compile issue.
- Version 148.