Update for spine runtime
Update spine runtime
Update Android.mk
Update Makefile

For nacl (spine runtime)
Update Android.mk
Update for spine runtime.
Merge remote-tracking branch 'refs/remotes/origin/patch-spine' into patch-spine
Merge branch 'develop' into update-spine-runtime-develop

Conflicts:
	extensions/proj.win32/libExtensions.vcxproj.filters
fixed #2252: Updating iOS and mac project configuration.
fixed #2252: Fixing a bug that stdio.h is in c++ namespace.
Updating AUTHORS.
Merge pull request #2745 from dumganhar/update-spine-runtime-develop

fixed #2252: Updating spine-runtime to the latest version. [develop]