Обсуждение: pgsql: Revert changes to pthread configure tests on REL9_5_STABLE.

Revert changes to pthread configure tests on REL9_5_STABLE.

Some buildfarm animals are still unhappy. These changes are becoming too
invasive for backpatch, for little benefit. This reverts commits
080c4dab3d9575449b81604051b160597cfd55c3 and
ce0da6261004ac15f01c21d8b94f11af7a098243.

Branch
------
REL9_5_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/7f06c7082a34f4ea564e31ee01114784a788b9fa

Modified Files
--------------
aclocal.m4            |    2 +-
config/acx_pthread.m4 |  171 +++
config/ax_pthread.m4  |  332 -----
configure             | 3886 +++++++++++++++++++++++--------------------------
configure.in          |  147 +-
5 files changed, 2092 insertions(+), 2446 deletions(-)