[BUG] gitk --all and git bisect visualize crash in non-english locale

Hi,

I'm getting the following crash on recent gitk:

  $ LANG=fr_FR gitk --all
  Error in startup script: bad menu entry index "Éditer la vue..."
      while executing
  ".bar.view entryconf [mca "Edit view..."] -state normal"
      invoked from within
  "if {$cmdline_files ne {} || $revtreeargs ne {} || $revtreeargscmd ne {}} {
      # create a view for the files/dirs specified on the command line
      se..."
      (file "/home/moy/local/usr-jessie/bin/gitk" line 12442)

It's linked to the locale:

  $ LANG=C gitk --all
  # Just works

but does not seem to be related to French in particular nor to the accent:

  $ LANG=es_ES gitk --all
  Error in startup script: bad menu entry index "Modificar vista..."
      while executing
  ".bar.view entryconf [mca "Edit view..."] -state normal"
      invoked from within
  "if {$cmdline_files ne {} || $revtreeargs ne {} || $revtreeargscmd ne {}} {
      # create a view for the files/dirs specified on the command line
      se..."
      (file "/home/moy/local/usr-jessie/bin/gitk" line 12442)

It also works fine without --all.

It bisects down to:

commit d99b4b0de27a2bd654a40353b65883e368da6d06
Author: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Date:   Wed Sep 9 15:20:53 2015 +0200

    gitk: Accelerators for the main menu
    
    This allows fast, keyboard-only usage of the menu (e.g. Alt+V, N to open a
    new view).
    
    Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
    Signed-off-by: Paul Mackerras <paulus@samba.org>

I'm not fluent enough in Tcl to fix this myself, sorry ;-).

Thanks,