cmdutil.service: move pidfile writing to a local function An upcoming patch will reuse this code.

inotify: add pidfile to parent options An upcoming patch will move pidfile writing from the parent to the child. This means that if the pid file isn't specified on the command-line but is specified as a config option, it needs to be added to the parent's opts dict.

get-with-headers: don't block indefinitely if the server had an internal error If the server had an internal error and returned 500, there's nothing to read, so "response.read()" blocks indefinitely. Only output the response if there's really a response.