Merge branch 'ew/connect-verbose'

There were a few "now I am doing this thing" progress messages in the TCP connection code that can be triggered by setting a verbose option internally in the code, but "git fetch -v" and friends never passed the verbose option down to that codepath. There was a brief discussion about the impact on the end-user experience by not limiting this to "fetch -v -v", but I think the conclusion is that this is OK to enable with a single "-v" as it is not too noisy. * ew/connect-verbose: pass transport verbosity down to git_connect