From: Darren King <darrenk@insightdist.com>

This will force the aix compiler to insert trapping code to
check for division by zero for the 4.1 port.

src/template/aix_41

 AROPT:crs
-CFLAGS:-qchars=signed -qmaxmem=8192 -qhalt=w -qsrcmsg
+CFLAGS:-qchars=signed -qmaxmem=8192 -qhalt=w -qsrcmsg -qcheck=divzero
 SHARED_LIB:-bnoentry -lc
 ALL:
 SRCH_INC: