pgsql: AIX: Link the postgres executable with -Wl,-brtllib.

AIX: Link the postgres executable with -Wl,-brtllib.

This allows PostgreSQL modules and their dependencies to have undefined
symbols, resolved at runtime.  Perl module shared objects rely on that
in Perl 5.8.0 and later.  This fixes the crash when PL/PerlU loads such
modules, as the hstore_plperl test suite does.  Module authors can link
using -Wl,-G to permit undefined symbols; by default, linking will fail
as it has.  Back-patch to 9.0 (all supported versions).

Branch
------
REL9_3_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/dc5075fed0e1f50ff88adfa6012ab17d5c8f4351

Modified Files
--------------
src/backend/Makefile |    2 +-
1 file changed, 1 insertion(+), 1 deletion(-)