Log Message:
-----------
Adjust power() error messages to be more descriptive.
Modified Files:
--------------
pgsql/src/backend/utils/adt:
float.c (r1.156 -> r1.157)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/float.c?r1=1.156&r2=1.157)
numeric.c (r1.113 -> r1.114)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/numeric.c?r1=1.113&r2=1.114)