Delete LICENSE_bada_pthread.txt
Delete LICENSE_iconv.txt
Delete LICENSE_sigslot.txt
Delete LICENSE_FontLabel.txt
HttpClient don't have to be inherited from Object, its a singeton, ok?
Merge pull request #4787 from dumganhar/develop

HttpClient doesn't have to be inherited from Object, its a singeton, ok?
Add missing bindings to setBlendFunc for various classes

Conflicts:
	cocos/scripting/lua/bindings/lua_cocos2dx_manual.cpp
closed #3565: Adds missing `lua_pop`to prevent lua stack issues.
Merge pull request #4792 from dumganhar/lua-setblendfuc

closed #3565: The setBlendFunc method of some classes wasn't exposed to LUA
Update AUTHORS [ci skip]
Update CHANGELOG [ci skip]