test-mq-subrepo.t: correctly forward stdin to test functions - stdin was not forwarded in testrm1 and testrm2 - Forwarding content with EOL using command substitution (`foo`) does not work correctly, the lines are joined together which breaks the prompt readline. - EOFError is raised in ui.prompt() if the input is too short on Linux while OSX treats it as an empty line.

filelog: move metadata parsing to a helper function

revlog: break hash checking into subfunction