@export interface to lua
Merge branch 'v1.2_dev' into v1.3_dev

Conflicts:
	lib/libextends/libluaexport/src/luaexport/FsLibBox2d.cc
	lib/libextends/libluaexport/src/luaexport/FsLibFaerisExport.cc
	lib/libextends/libluaexport/src/luaexport/FsLibLuaScript.cc
	lib/libextends/libluaexport/src/luaexport/FsLibSensorExport.cc
	lib/libextends/libluaexport/src/luaexport/FsLibSpineSprite.cc