lazycatd.scm: Store PID file in the runtime home

* lazycat-daemon/lazycatd.scm (make-all-dirs): New procedure.
  (%lazycat-data-home %lazycat-config-home, %lazycat-runtime-home):
  New symbols.
  (*pid-file*): Store PID file in the runtime home according to XDG
  specs.
lazycat-daemon/lazycatd.scm (*pid-file*): Rename to `%pid-file'.
lc.in (lc-quit): Fix a bug

* ui/lc.in (lc-quit): Fix a bug: Remove extra arg from `close'
  call.