Upgrade to unrarsrc-4.2.4
Modernize project to Xcode 4.5
Implement unrarFileTo:overwrite
Remove deprecated method
Stop listing file or extracting file if archive cannot be open
Fix memory leaks
Use dataWithBytesNoCopy:length:freeWhenDone: to fix memory leak and skip copy operation
Disable warnings from unrar lib
Merge pull request #10 from flambert/fixes

Fix various problems found while using the library