pgsql: Revert configure warning to use "official distribution".

Log Message:
-----------
Revert configure warning to use "official distribution".

Modified Files:
--------------
pgsql:
configure (r1.674 -> r1.675)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure?r1=1.674&r2=1.675)
pgsql/config:
missing (r1.6 -> r1.7)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/missing?r1=1.6&r2=1.7)
perl.m4 (r1.7 -> r1.8)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/perl.m4?r1=1.7&r2=1.8)
programs.m4 (r1.27 -> r1.28)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/programs.m4?r1=1.27&r2=1.28)