Add PVR.CCZ encryption support to ZipUtils based upon http://www.codeandweb.com/texturepacker/contentprotection
Add sample to TestCPP.
Promote global functions and variables for PVR decryption to ZipUtils class.
Rename PVR decryption functions and variables to better fit in the Cocos2DX framework.
Improve log error notes.
Update TextureAtlasEncryptionTest to match revised function call in ZipUtils.
Update ccSetPvrEncryptionKeyPart documentation to clarify that encryption is never 100% secure.
Added function ccSetPvrEncryptionKey(…) to set the encryption key in a single function call.
Updated the TextureAtlasEncryptionTest to show how to use the ccSetPvrEncryptionKey(…) function.
Updated the notes and header docs for improved clarity.
Merge branch 'TexturePacker-SpriteSheetProtection' of https://github.com/FlowerpotGames/cocos2d-x into TexturePacker-SpriteSheetProtection
add TexturePackerEncryptionTest into android, mac, linux, native client, marmalade project
add TexturePackerEncryptionTest into vs2010 project
export ZipUtils
Merge branch 'master' into TexturePacker-SpriteSheetProtection
Merge pull request #1 from minggo/TexturePacker-SpriteSheetProtection

Add TexturePackerEncryptionTest for other platforms
Merge pull request #2458 from FlowerpotGames/TexturePacker-SpriteSheetProtection

Add encrypted PVR.CCZ support to ZipUtils + Tests