Log Message:
-----------
include ac_func_accept_argtypes.m4 to avoid configure error.
Patch made by Taiki Yamaguchi.
Modified Files:
--------------
pgpool:
configure.in (r1.21 -> r1.22)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool/configure.in.diff?r1=1.21&r2=1.22)