configure patch for hpux

[law@redhat.com]

  > Just copy the macro from aclocal.m4 to acinclude.m4 and apply the
  > change there.  From then on, running `aclocal' will pick the macro
  > from acinclude.m4, instead of from automake's macro library.
BTW, who maintains automake these days?  This problem really should be
fixed in automake itself.  We really don't want to be putting compilers
into strict ANSI mode -- automake even has a comment to this effect, but
whomever wrote the code apparently wasn't aware of how to get the desired
behavior out of the HP-UX compiler.

jeff