pgsql: Remove use of TAP subtests

Remove use of TAP subtests

They turned out to be too much of a portability headache, because they
need a fairly new version of Test::More to work properly.

Branch
------
REL9_4_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/ae3eb9b8ef5638610da05038e40229d4f4e5c1fd

Modified Files
--------------
src/bin/initdb/t/001_initdb.pl | 2 +-
src/bin/pg_basebackup/t/010_pg_basebackup.pl | 2 +-
src/bin/pg_basebackup/t/020_pg_receivexlog.pl | 2 +-
src/bin/pg_config/t/001_pg_config.pl | 2 +-
src/bin/pg_controldata/t/001_pg_controldata.pl | 2 +-
src/bin/pg_ctl/t/001_start_stop.pl | 2 +-
src/bin/scripts/t/010_clusterdb.pl | 2 +-
src/bin/scripts/t/011_clusterdb_all.pl | 2 +-
src/bin/scripts/t/020_createdb.pl | 2 +-
src/bin/scripts/t/030_createlang.pl | 2 +-
src/bin/scripts/t/040_createuser.pl | 2 +-
src/bin/scripts/t/050_dropdb.pl | 2 +-
src/bin/scripts/t/060_droplang.pl | 2 +-
src/bin/scripts/t/070_dropuser.pl | 2 +-
src/bin/scripts/t/080_pg_isready.pl | 2 +-
src/bin/scripts/t/090_reindexdb.pl | 2 +-
src/bin/scripts/t/091_reindexdb_all.pl | 2 +-
src/bin/scripts/t/100_vacuumdb.pl | 2 +-
src/bin/scripts/t/101_vacuumdb_all.pl | 2 +-
src/bin/scripts/t/102_vacuumdb_stages.pl | 2 +-
src/test/perl/TestLib.pm | 81 ++++++++----------------
21 files changed, 45 insertions(+), 76 deletions(-)