Implementation of reverse string. - Implemented via _wcsrev - Reduced string copies - Implemented using CoreFoundation - Removed usage of Foundation associated with reverse string.
Implementation of reverse string.
- Implemented via _wcsrev
- Reduced string copies
- Implemented using CoreFoundation
- Removed usage of Foundation associated with reverse string.

Fixes #2478

pradipd/WinObjC,ehren/WinObjC,ehren/WinObjC,ehren/WinObjC,nathpete-msft/WinObjC,ehren/WinObjC,pradipd/WinObjC,nathpete-msft/WinObjC,nathpete-msft/WinObjC,ehren/WinObjC,pradipd/WinObjC,pradipd/WinObjC,nathpete-msft/WinObjC,pradipd/WinObjC,nathpete-msft/WinObjC