Log Message:
-----------
Some versions of lex will drop a lex.yy.c file when we probe to see if
they are flex. Clean up after them.
Modified Files:
--------------
pgsql-server/config:
programs.m4 (r1.15 -> r1.16)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/config/programs.m4.diff?r1=1.15&r2=1.16)
pgsql-server:
configure (r1.388 -> r1.389)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/configure.diff?r1=1.388&r2=1.389)