fix 64bit warning. unsigned int (int) —> long.
Removing cocosjs_manual_conversions.h(.cpp). Put all jsval <-> native value conversion codes to js_manual_conversions.h(.cpp).
Adding cc.TextureCache.getInstance() to jsb_deprecated.js.
Updating submodule of bindings-generator.
Reverting AssetsManager::update.
remove makefiles
[ci skip]update linux build commands
Merge pull request #4171 from dumganhar/jsb-64bit-fix

[ci skip]Jsb 64bit fix
Merge pull request #4173 from minggo/remove-makefile

[ci skip]remove makefiles
[develop] Updating bindings-generator, fixing forward declare that generates binding glue codes which is an empty class.