./configure install on MIPS

[Ben Hyde <bh...@gensym.com>]

If I change all the -x to -f so that problem with the MIPS test
not supporting -x is avoided then ./configure works on the
MIPS, and the make proceeds fine, but then the install fails.
  
  > uname -a
  ULTRIX th 4.1 0 RISC
  > pwd
  /tmp_mnt/home/gw/tmp/aa/bt/mips/apache_1.3.0
  > make -n install
  if [ ! -f ./src/.apaci.build.ok ]; then      make -f Makefile  root= build;  fi
  *** Error code 1
  
  Stop.
  > sh -c 'if [ ! -f ./src/.apaci.build.ok ]; then      make -f Makefile  root= build;  fi'
  > echo $status
  1
  
An else clause (e.g.
 if [ ! -f ./src/.apaci.build.ok ]; then make -f Makefile  root= build; else echo foo; fi)
works around this one.

  - ben