Thread: pgsql-server: Some versions of lex will drop a lex.yy.c file when we

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)