pgsql: Add gitignore files for ecpg regression tests.

Add gitignore files for ecpg regression tests.

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

Branch
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REL8_2_STABLE

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=c2067942c828c2ac601f8c06e7cbebbd7b6057a9

Modified Files
--------------
src/interfaces/ecpg/test/.gitignore | 9 +++++++++
.../ecpg/test/compat_informix/.gitignore | 3 +++
src/interfaces/ecpg/test/connect/.gitignore | 3 +++
src/interfaces/ecpg/test/pgtypeslib/.gitignore | 3 +++
src/interfaces/ecpg/test/preproc/.gitignore | 3 +++
src/interfaces/ecpg/test/sql/.gitignore | 3 +++
src/interfaces/ecpg/test/thread/.gitignore | 3 +++
7 files changed, 27 insertions(+), 0 deletions(-)