RFA: adapt gdb/testsuite/config/sim.exp to new gdb_file_cmd

[Jim Blandy <jimb@redhat.com>]

Here's a caller of gdb_file_cmd that wasn't updated when the type of
its return value was changed.

Tested on i686-pc-linux-gnu x powerpc-eabispe sim.

2004-09-08  Jim Blandy  <jimb@redhat.com>

	* config/sim.exp (gdb_load): Adapt to expect and return new return
	values from gdb_file_command.

Index: gdb/testsuite/config/sim.exp
===================================================================
RCS file: /cvs/src/src/gdb/testsuite/config/sim.exp,v
retrieving revision 1.2
diff -c -p -r1.2 sim.exp
*** gdb/testsuite/config/sim.exp	8 Feb 2004 03:56:14 -0000	1.2
--- gdb/testsuite/config/sim.exp	8 Sep 2004 23:22:12 -0000
*************** proc gdb_target_sim { } {
*** 46,52 ****
  
  #
  # gdb_load -- load a file into the debugger.
- #             return a -1 if anything goes wrong.
  #
  proc gdb_load { arg } {
      global verbose
--- 46,51 ----
*************** proc gdb_load { arg } {
*** 56,62 ****
      global gdb_prompt
  
      if { $arg != "" } {
! 	if [gdb_file_cmd $arg] then { return -1 }
      }
  
      gdb_target_sim
--- 55,64 ----
      global gdb_prompt
  
      if { $arg != "" } {
!         set status [gdb_file_cmd $arg]
!         if { [lindex $status 0] != "" } then {
!             return $status
!         }
      }
  
      gdb_target_sim
*************** proc gdb_load { arg } {
*** 71,77 ****
  	    }
  	    set timeout 30
  	    verbose "Timeout is now $timeout seconds" 2
! 	    return 1
  	}
  	-re "$gdb_prompt $"     {
  	    if $verbose>1 then {
--- 73,79 ----
  	    }
  	    set timeout 30
  	    verbose "Timeout is now $timeout seconds" 2
! 	    return { "" }
  	}
  	-re "$gdb_prompt $"     {
  	    if $verbose>1 then {