MOBSDK-302

- Added target for Mac OS X - AlfrescoSDK-OSX
- Renamed target for iOS - AlfrescoSDK-iOS
- Addition of AlfrescoOAuthNSLoginViewController
- Deprecated AlfrescoOAuthLoginViewController with AlfrescoOAuthUILoginViewController
- Added Mac OS X builds for CMIS following local patches for https://issues.apache.org/jira/browse/CMIS-831
- Fixed build scripts to include mac target builds of libraries and frameworks
    - scripts can now also be run with a space in the folder path


It's better, but could you please also extract the code in the designated initialiser that determines the base cloud URL, that logic is repeated in both classes. The kOAuthRequestDenyAction constant is also defined in both classes, could you please move this to the internal constants file.