Log Message:
-----------
Refactor transformExpr() by creating separate functions for most of the
expression types.
Modified Files:
--------------
pgsql/src/backend/parser:
parse_expr.c (r1.179 -> r1.180)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_expr.c.diff?r1=1.179&r2=1.180)