[pgpool-committers: 6291] pgpool: Update pgpool.spec to support PostgreSQL 12.

[Bo Peng]

Update pgpool.spec to support PostgreSQL 12.

Branch
------
V4_1_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=fff5fe5cc6ee103946a7964792209c77ab88fb38

Modified Files
--------------
src/pgpool.spec | 28 +++++++++++++++-------------
1 file changed, 15 insertions(+), 13 deletions(-)