Still more .gitignore cleanup.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 54c88dee46ae63d1f183ed864b624881ed05d370
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2010-09-24T17:48:15Z
Releases: 9.1.0
Still more .gitignore cleanup.

Fix overly-enthusiastic ignores, as identified by
git ls-files -i --exclude-standard

Files