Fixed setHeader while Android had problems with stringstreams.
Merge pull request #2623 from zynga/XMLHttpRequest_cchttpclient

fixed #2092: Fixed setHeader while Android had problems with stringstreams.
remove the un-used static variable in PluginUtilsIOS
Merge pull request #2625 from guanqun/current-master

remove the un-used static variable in PluginUtilsIOS
issue #2103  add more test lua
issue #2103  add more test lua
issue #2103  add some overlapping file and delete some comment line
issue #2103  modify some build script
Merge pull request #2627 from samuele3hu/issue2103_testlua

add more test lua
issue #2103 add some skip function name to tools/tojs/cocos2dx_extension.ini
Merge pull request #2631 from samuele3hu/issue2103_testlua

Add some skip function name to tools/tojs/cocos2dx_extension.ini
issue #2103 modify some skip function name to tools/tojs/cocos2dx_extension.ini
Merge pull request #2635 from samuele3hu/issue2103_testlua

modify some skip function name to tools/tojs/cocos2dx_extenson.ini
Update generate-jsbindings.sh [ci skip], send pull request to the branch which is being built.