Fixed seafile-controller.c (corrected pid directory location) and seafil...

...e-admin (bug in is_running also reported false positives in the shape of cmd line arguments of the same name)
Not sure if I follow the rationale here. Why do you want to store the pids there and not in the seafile-server subdir?

Placing the pids directory in the installation-dir as suggested will weaken security as you would have to run the server as root when choosing a default installation location such as /usr/local.

Awesome software BTW!