m4 moved patch to autoconf.sh and autoupdate.sh

[Kelly Anderson]

The attached patch allows PC drive specs to be handled in the m4
location check.  I'm using OS/2, should be useful for all of the PC
strains.

I'm hoping to cut down the number of patches to autoconf that I have to
manage locally.  I am quite dependant on a locally patched version of
autoconf.  I'd like to submit more patches, we'll see how this goes.

Index: autoconf.sh
===================================================================
RCS file: /cvs/autoconf/autoconf.sh,v
retrieving revision 1.112
diff -c -r1.112 autoconf.sh
*** autoconf.sh 2000/12/23 10:11:58     1.112
--- autoconf.sh 2001/01/02 06:36:35
***************
*** 96,102 ****
  # It may have been found originally in a build directory.
  : address@hidden@}
  case "$M4" in
! /*) test -f "$M4" || M4=m4 ;;
  esac
  # Some non-GNU m4's don't reject the --help option, so give them /dev/null.
  case `$M4 --help </dev/null 2>&1` in
--- 96,102 ----
  # It may have been found originally in a build directory.
  : address@hidden@}
  case "$M4" in
! /*|[a-zA-Z]:*) test -f "$M4" || M4=m4 ;;
  esac
  # Some non-GNU m4's don't reject the --help option, so give them /dev/null.
  case `$M4 --help </dev/null 2>&1` in
Index: autoupdate.sh
===================================================================
RCS file: /cvs/autoconf/autoupdate.sh,v
retrieving revision 1.46
diff -c -r1.46 autoupdate.sh
*** autoupdate.sh       2000/12/23 10:11:58     1.46
--- autoupdate.sh       2001/01/02 06:36:42
***************
*** 76,82 ****
  # It may have been found originally in a build directory.
  : address@hidden@}
  case $M4 in
!   /*) test -f "$M4" || M4=m4 ;;
  esac
  # Some non-GNU m4's don't reject the --help option, so give them /dev/null.
  case `$M4 --help < /dev/null 2>&1` in
--- 76,82 ----
  # It may have been found originally in a build directory.
  : address@hidden@}
  case $M4 in
!   /*|[a-zA-Z]:*) test -f "$M4" || M4=m4 ;;
  esac
  # Some non-GNU m4's don't reject the --help option, so give them /dev/null.
  case `$M4 --help < /dev/null 2>&1` in