nrelease: Don't install the git meta-pkg (it will pull in gitk).
Update the pciconf(8) database.

April 4, 2013 snapshot from http://pciids.sourceforge.net/
nrelease: Remove an unused variable.
nrelease: Add pkg(8) to our images and ISOs.

'make release' now requires an additional directory with the dports tree.

This commit adds some more steps (such as running 'pkg autoremove').

In-discussion-with: marino
nrelease: Handle dports' /usr/distfiles better and remove /usr/dports.
Merge branch 'master' into gsocdrm_alter