Changed the flags to uint.
Changed the flags to uint.

Flags were ushort for historical reasons, but the binary protcol supports uint, so it made sense to switch. Text protocol is going to be obsolete anyways.

enyim/EnyimMemcached,DukeCheng/EnyimMemcachedCore,couchbase/EnyimMemcached,haizhixing126/EnyimMemcached,haizhixing126/EnyimMemcached,oceanho/EnyimMemcached,cnblogs/EnyimMemcachedCore,cnblogs/EnyimMemcachedCore,DukeCheng/EnyimMemcachedCore,oceanho/EnyimMemcached