Re-add -pipe compile flags for bsd's.

src/template/bsdi

-CFLAGS='-O2 -pipe'
+CFLAGS="$CFLAGS -pipe"
 
 case $host_cpu in
   i?86)  CFLAGS="$CFLAGS -m486";;

src/template/freebsd

+CFLAGS="$CFLAGS -pipe"
+
 case $host_cpu in
-  alpha*)   CFLAGS="-O";;
+  alpha*)   CFLAGS="$CFLAGS -O";;
 esac
 
 THREAD_SUPPORT=yes

src/template/netbsd

+CFLAGS="$CFLAGS -pipe"
+
 THREAD_SUPPORT=yes
 NEED_REENTRANT_FUNCS=yes	# 1.6 2003-09-14

src/template/openbsd

+CFLAGS="$CFLAGS -pipe"

src/template/qnx4

-CFLAGS="-O2 -I/usr/local/include"
+CFLAGS="$CFLAGS -I/usr/local/include"
 LIBS="-lunix"