PATCH for testsuite driver

[Mark P. Mitchell]

At some point, the testsuite started assuming that objdump was
available.  This resulted in the following on an IRIX6 box:

  ERROR: tcl error sourcing /users/mitchell/dev/egcs/gcc/testsuite/gcc.c-torture/compile/compile.exp.
  ERROR: couldn't execute "objdump": no such file or directory
      while executing
  "exec $objdump_name --file-headers objfmtst.o "
      (procedure "gcc_target_object_format" line 14)
      invoked from within
  "gcc_target_object_format"
      ("eval" body line 5)
      invoked from within
  ...

I checked in this patch.

--
Mark Mitchell                   mark@codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com

Fri Oct  1 00:53:17 1999  Mark P. Mitchell  <mark@codesourcery.com>

	* lib/file-format.exp (gcc_target_object_format): Don't
	crash if objdump is unavailable.

Index: testsuite/lib/file-format.exp
===================================================================
RCS file: /cvs/egcs/egcs/gcc/testsuite/lib/file-format.exp,v
retrieving revision 1.2
diff -c -p -r1.2 file-format.exp
*** file-format.exp	1999/09/04 15:09:15	1.2
--- file-format.exp	1999/10/01 06:51:39
*************** proc gcc_target_object_format { } { 
*** 35,42 ****
          
          gcc_target_compile objfmtst.c objfmtst.o object ""
          
!         set output [exec $objdump_name --file-headers objfmtst.o ]
!         
          file delete objfmtst.o
          
          if ![ regexp "file format (.*)arch" $output dummy objformat ]  {
--- 35,44 ----
          
          gcc_target_compile objfmtst.c objfmtst.o object ""
          
! 	catch {
!           set output [exec $objdump_name --file-headers objfmtst.o ]
!         } output
! 
          file delete objfmtst.o
          
          if ![ regexp "file format (.*)arch" $output dummy objformat ]  {