Add gitignore files for ecpg regression tests.

Magnus Hagander <magnus@hagander.net>

Commit: f23bc1e8a42cab50c204bbab837f95cbc2353311
Author: Magnus Hagander <magnus@hagander.net>
Date: 2010-09-22T19:49:07Z
Releases: 9.0.1
Add gitignore files for ecpg regression tests.

Backpatch to 8.2 as that's how far the structure looks the same.

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