AppCan打包的报错信息中 关于缺少XMPP的依赖库libresolv.dylib。
在打包静态库的时候不允许加入动态库，但是打包的错误提示信息 说缺少依赖库。
Undefined symbols for architecture armv7:
"_dns_parse_resource_record", referenced from:
-[XMPPSRVResolver processRecord:length:] in libuexEaseMob.a(XMPPSRVResolver.o)
"_dns_free_resource_record", referenced from:
-[XMPPSRVResolver processRecord:length:] in libuexEaseMob.a(XMPPSRVResolver.o)
- ld: symbol(s) not found for architecture armv7
- clang: error: linker command failed with exit code 1 (use -v to see invocation)
升级引擎版本到3.1以上