autoconf & automake~pkg-renamed cruft in pkg db - how to fix?

[Mike Brown]

One of the ports on my system needs automake, but somehow its name has been 
butchered in the pkg database.

===>>> Launching 'make checksum' for net/GeoIP in background
===>>> Gathering dependency list for net/GeoIP from ports
===>>> Launching child to update automake~pkg-renamed~8513-1.14 to automake-1.14_1
===>>> GeoIP-1.6.2_1 >> automake~pkg-renamed~8513-1.14 (1/1)
===>>> No valid installed port, or port directory given
===>>> Try portmaster --help
===>>> Update for automake~pkg-renamed~8513-1.14 failed
===>>> Aborting update

# pkg info auto\*
autoconf-wrapper-20130530
autoconf~pkg-renamed~9939-2.69
autoconf~pkg-renamed~CD89-2.13.000227_6
automake-wrapper-20130530
automake~pkg-renamed~8513-1.14
automake~pkg-renamed~D475-1.4.6_6

How do I clean up this mess?