issue #3900: Removes 'common' folder. It's unused for generating bindings.
issue #3900: Bindings-generator works with spidermonkey FFv27 now.
Merge pull request #79 from dumganhar/iss3900-spidermonkey-v27

issue #3900: Bindings-generator works with spidermonkey FFv27 now.
issue #3956:Optimize the templates of lua binding-generator
Merge branch 'develop' of git://github.com/cocos2d/bindings-generator into HEAD
Merge pull request #80 from samuele3hu/dynamicast

issue #3956:Optimize the templates of lua binding-generator
Object -> Ref.
Object -> Ref for Lua.
Merge pull request #81 from dumganhar/iss4058-ref

Object -> Ref.
add ref_class check.
Merge pull request #82 from dumganhar/iss4058-ref

add ref_class check.