[2.1.5] Fixing a typo: EVNET_ --> EVENT_
[2.1.5] Re-order of recovering GL status in jni/xxx/main.cpp.
Update the configuration files of JS Binding in plugin.
Merge pull request #2 from natural-law/master

Update the configuration files of JS Binding in plugin.
Remove JS binding & samples of plugins.
Solve the error during ndk-build when ndk version is r9b & later.
Merge pull request #19 from natural-law/master

Update the plugin protocols code & samples.
Update HelloPlugins test cases on the android platform
添加facebook android端接口
Feature #5950 Add Facebook API
Merge branch 'develop' of https://github.com/cocos2d-x/plugin-x into facebooktest
Merge branch 'plugin_fb_5th' of https://github.com/wuzhiming/plugin-x into facebooktest
Feature #5950 Add Facebook API logPurchase
Merge branch 'plugin_fb_5th' of https://github.com/wuzhiming/plugin-x into facebooktest
add facebook api java support canPresentDialog  logPurchase
Feature #5950 Add Facebook API upgrade Facebook iOS sdk
Merge branch 'plugin_fb_5th' of https://github.com/wuzhiming/plugin-x into facebooktest
Feature #5950 Add Facebook API  add getUserID api  and their bindings
facebook sdk android api modify, add webDialog
Merge branch 'plugin_fb_5th' of https://github.com/wuzhiming/plugin-x into facebooktest