[patch] to gcc-2.95.3 top level: backport 4.3BSD fix

[Michael Sokolov]

Hi there,

Last July I've made the following change to the gcc top-level configure:

: 2000-07-23  Michael Sokolov  <msokolov@ivan.Harhan.ORG>
:
:         * configure (topsrcdir): Don't use dirname.

to make it work on 4.3BSD which doesn't have dirname. Bernd, could you please
include this in 2.95.3? The patch against gcc-2_95-branch is below.

--
Michael Sokolov		Harhan Engineering Laboratory
Public Service Agent	International Free Computing Task Force
			International Engineering and Science Task Force
			615 N GOOD LATIMER EXPY STE #4
			DALLAS TX 75204-5852 USA

Phone: +1-214-824-7693 (Harhan Eng Lab office)
E-mail: msokolov@ivan.Harhan.ORG (ARPA TCP/SMTP) (UUCP coming soon)

Wed Dec 13 19:17:33 PST 2000  Michael Sokolov  <msokolov@ivan.Harhan.ORG>

	from HEAD 2000-07-23  Michael Sokolov  <msokolov@ivan.Harhan.ORG>
	* configure (topsrcdir): Don't use dirname.

Index: configure
===================================================================
RCS file: /cvs/gcc/egcs/configure,v
retrieving revision 1.23
diff -p -r1.23 configure
*** configure	1999/04/02 14:17:40	1.23
--- configure	2000/12/14 03:19:37
*************** fi
*** 518,524 ****
  
  configsub=`echo ${progname} | sed 's/configure$/config.sub/'`
  moveifchange=`echo ${progname} | sed 's/configure$/move-if-change/'`
! topsrcdir=`cd \`dirname ${progname}\`; pwd`
  
  
  # this is a hack.  sun4 must always be a valid host alias or this will fail.
--- 518,525 ----
  
  configsub=`echo ${progname} | sed 's/configure$/config.sub/'`
  moveifchange=`echo ${progname} | sed 's/configure$/move-if-change/'`
! ## the sed command below emulates the dirname command
! topsrcdir=`cd \`echo ${progname} | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'\`; pwd`
  
  
  # this is a hack.  sun4 must always be a valid host alias or this will fail.