tilemap supports XML layer format
the latest develop code merged
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into tilemap_plain_xml_format_support
added _currentTileIndex member to TMXLayerInfo
removed extra _currentTileIndex
Merge branch 'tilemap_plain_xml_format_support' of https://github.com/simpliplant/cocos2d-x into tilemap_plain_xml_format_support and add extra control to parse the tmx file for load the xml format tiles.
issue #2517: add the LocalVarToAuto.py script
closed #2517: Use LocalVarToAuto.py to change Samples src file
issue #2517: Restore TestCpp proj.android that edited by mistake.
issue #2525:add iterator for Array and make Array can be used in range-based loop
Keep TravisCI happy : build Android TestCpp for ARM architecture only.
Merge pull request #3432 from folecr/travisci_android_arm_only

Keep TravisCI happy : build Android TestCpp for ARM architecture only.
Merge pull request #3431 from minggo/iss2525-add_iterator_for_array

add iterator for Array and make Array can be used in range-based loop
Merge pull request #3430 from boyu0/iss2517_update_local_var_to_auto

closed #2517: Update all test cases use auto for local variables
Merge pull request #3420 from boyu0/tilemap_plain_xml_format_support

Support for loading tilemaps with plain XML layer format