fixed one-hang-bug in cocos-console-test.py
[ci skip]
[ci skip]
Merge pull request #6559 from shujunqiao/cocos-console-hang

fixed one-hang-bug in cocos-console-test.py. [ci skip]
Re-adds download-deps.py, comments unzip functionality, please help to
test the download functionality. Thanks.
Percent number fix
Speed calculate fix
Merge pull request #6590 from dumganhar/v3

Re-adds download-deps.py, comments unzip functionality, please help to test the download functionality. Thanks.
[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #6591 from CocosRobot/update_cocosfiles_1399375244

[AUTO][ci skip]: updating cocos2dx_files.json
issue #5032:A potential crash bug of Lua binding
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_lua_fix
Export the `2d` include directory of engine on android.
Merge pull request #6596 from natural-law/v3

Export the `2d` include directory of engine on android.
download-deps.py will unzip the download zip file.
Output more detail informations
Delete external submodule, please use 'download-deps.py' instead.
Re-adds box2d and chipmuck sources, we need to use prebuilt libraries for them too.
Adds external/version.txt
Updates .gitignore.
updates travis-script.