Remove compiler warnings (add missing include files). Only link against

Peter Eisentraut <peter_e@gmx.net>

Commit: 3eb9b73718f1d14ff3f4cc005fa7c665995c5a77
Author: Peter Eisentraut <peter_e@gmx.net>
Date: 2000-10-28T15:10:36Z
Releases: 7.1.1
Remove compiler warnings (add missing include files).  Only link against
-lm if it's actually there.

Files