chat: make Glob return chan GlobReply rather than chan interface{}
chat: make Glob return chan GlobReply rather than chan interface{}

MultiPart: 3/3
Change-Id: I97a1e29a860ce297c10911d98362d142aa33c6b2

viksit/chat,viksit/chat,vanadium/chat,vanadium/chat,viksit/chat,vanadium/chat,vanadium/chat,viksit/chat,viksit/chat,vanadium/chat