Add <bstring.h> include for IRIX; FD_ZERO uses bzero, which is

prototyped in bstring.h.

Don't use killpg();  part of the IRIX -D_BSD_COMPAT functionality,
and since the rest of apache doesn't use -D_BSD_COMPAT it probably
shouldn't use killpg().

Note that HAVE_BSTRING_H may not be the best name for the define.

Reviewed by: Marc Slemko, Jim Jagielski
Submitted by: Dean Gaudet


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77627 13f79535-47bb-0310-9956-ffa450edef68