pgsql: Some more gitignore cleanups: cover contrib and PL regression te

Some more gitignore cleanups: cover contrib and PL regression test outputs.

Also do some further work in the back branches, where quite a bit wasn't
covered by Magnus' original back-patch.

Branch
------
REL7_4_STABLE

Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=ec8576114f5cb6a9acc5a6c42f92bf6867015ee0

Modified Files
--------------
contrib/btree_gist/.gitignore    |    7 +++++++
contrib/cube/.gitignore          |    3 +++
contrib/dbase/.gitignore         |    1 +
contrib/dblink/.gitignore        |    2 ++
contrib/dbsize/.gitignore        |    1 +
contrib/earthdistance/.gitignore |    2 ++
contrib/findoidjoins/.gitignore  |    1 +
contrib/fulltextindex/.gitignore |    1 +
contrib/intagg/.gitignore        |    1 +
contrib/intarray/.gitignore      |    2 ++
contrib/isbn_issn/.gitignore     |    1 +
contrib/ltree/.gitignore         |    2 ++
contrib/miscutil/.gitignore      |    1 +
contrib/noupdate/.gitignore      |    1 +
contrib/pg_autovacuum/.gitignore |    2 ++
contrib/pg_dumplo/.gitignore     |    1 +
contrib/pg_logger/.gitignore     |    1 +
contrib/pgcrypto/.gitignore      |    2 ++
contrib/rserv/.gitignore         |   14 ++++++++++++++
contrib/rtree_gist/.gitignore    |    3 +++
contrib/seg/.gitignore           |    3 +++
contrib/string/.gitignore        |    1 +
contrib/tablefunc/.gitignore     |    2 ++
contrib/tsearch/.gitignore       |    4 ++++
contrib/tsearch2/.gitignore      |    4 ++++
contrib/userlock/.gitignore      |    1 +
src/backend/bootstrap/.gitignore |    1 +
src/backend/parser/.gitignore    |    1 +
src/bin/initlocation/.gitignore  |    1 +
src/bin/ipcclean/.gitignore      |    1 +
src/bin/pg_encoding/.gitignore   |    1 +
src/bin/pg_id/.gitignore         |    1 +
src/bin/pgtclsh/.gitignore       |    1 +
src/include/parser/.gitignore    |    2 +-
src/interfaces/libpq/.gitignore  |    2 ++
src/pl/plpgsql/src/.gitignore    |    2 ++
src/pl/tcl/modules/.gitignore    |    3 +++
37 files changed, 79 insertions(+), 1 deletions(-)