Log Message:
-----------
Make the AWK default value also take effect if $AWK is an empty string.
Modified Files:
--------------
pgsql/src/backend/utils:
Gen_fmgrtab.sh (r1.38 -> r1.39)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/Gen_fmgrtab.sh?r1=1.38&r2=1.39)