Tiny patch to configure.in to remove chmod -f option

[Sam Kendall]

On several Unixes, including

   * HP-UX 11.00 and 11.11
   * SGI IRIX64 6.5
   * DYNIX/ptx 4.4.8 (the Unix put out by Sequent, which is now owned by
     IBM)

chmod doesn't understand the -f option.  This leads to the configure
script crashing.

The patch is to remove the -f option.  On a couple of other Unixes I
looked at (Solaris 7 and AIX 4.3.3), the only effect of -f is to
suppress warning messages.  So I think this is a pretty safe patch.

*** configure.in        Fri Apr 27 16:00:47 2001
--- configure.in.fixed  Mon Jun  4 11:40:35 2001
***************
*** 368,374 ****
          windows-NT/Makefile \
          windows-NT/SCC/Makefile \
          zlib/Makefile],
!         [chmod -f +x \
          contrib/clmerge \
          contrib/cln_hist \
          contrib/commit_prep \
--- 368,374 ----
          windows-NT/Makefile \
          windows-NT/SCC/Makefile \
          zlib/Makefile],
!         [chmod +x \
          contrib/clmerge \
          contrib/cln_hist \
          contrib/commit_prep \

--
Sam Kendall
Ab Initio Software Corporation