add WebP support
fix some issues
fix for mac
fix for win32
update libwebp to 2.1
add support RGB888, RGB565,RGBA4444
fix some issues
remove RGB565 support
Initial Import of tinyxml2 to replace libxml2
added ccuserdefault tinyxml2 ver
final fix.. tested
Added TMX polygon parsing.
issue #1687: Refactoring CCFileUtils, abstracting the same implementations for all platforms.
issue #1687: [Marmalade] If the font name wasn't end with `.ttf`, skip making a full path.
issue #1687: Comments some logs output for CCFileUtils.
issue #1687: Updating comments for CCFileUtils.
issue #1687: Updating the comments for CCFileUtils.
issue #1687: Updating the comments for CCFileUtils.
issue #1687: Moving the global function( ccFileUtils_dictionaryWithContentsOfFileThreadSafe,  ccFileUtils_arrayWithContentsOfFileThreadSafe) to the CCFileUtils class.
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issue #1687: Adding new test - Checking whether file exists.
issue #1687: CCFileUtils::isFileExist now support relative path.