port: dry-run still blocks on the lock file.

[lhunath@…]

$ port -y install kdepim4
Password:
--->  Computing dependencies for kdepim4
For kdebase4-runtime: skipping org.macports.main (dry run)
Waiting for lock on /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_kde_kdebase4-runtime/work/.macports.kdebase4-runtime.state

I expect to be able to run a read-only run of port while another is running. I don't see why it would need to wait on the lock file as there are no conditions that could break the operation of macports.

[jmr@…]

This should be fixed by r66921.