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
------
REL8_2_STABLE

Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=4b00e13707536aee7b6ad41865489308ab3c5616

Modified Files
--------------
contrib/btree_gist/.gitignore | 2 ++
contrib/cube/.gitignore | 3 +++
contrib/dblink/.gitignore | 2 ++
contrib/earthdistance/.gitignore | 2 ++
contrib/hstore/.gitignore | 2 ++
contrib/intagg/.gitignore | 1 +
contrib/intarray/.gitignore | 2 ++
contrib/ltree/.gitignore | 2 ++
contrib/pg_trgm/.gitignore | 2 ++
contrib/pgcrypto/.gitignore | 2 ++
contrib/seg/.gitignore | 3 +++
contrib/tablefunc/.gitignore | 2 ++
contrib/tsearch2/.gitignore | 3 +++
contrib/xml2/.gitignore | 2 ++
src/backend/bootstrap/.gitignore | 1 +
src/backend/parser/.gitignore | 1 +
src/bin/ipcclean/.gitignore | 1 +
src/include/parser/.gitignore | 2 +-
src/interfaces/libpq/.gitignore | 4 ++++
src/pl/plperl/.gitignore | 3 +++
src/pl/plpgsql/src/.gitignore | 2 ++
src/pl/plpython/.gitignore | 2 ++
src/pl/tcl/.gitignore | 2 ++
src/pl/tcl/modules/.gitignore | 3 +++
24 files changed, 50 insertions(+), 1 deletions(-)