Log Message:
Changes 0.11.55:
* Added "Require Source Selection" (and Destination ditto) flag
  in the "Before&After" options for external command rows. This
  prevents commands from running if there is no selection, which
  is handy to avoid making programs read from stdin. Added after
  issue report by C. H. Block.
* Brought Copyright in About window and man page into 2005. :)
* Added (commented-out) sample row in gentoogtkrc.in to show how
  to set color of non-used pane rows (not reachable by gentoo's
  File Style system).
* Fixed broken g_snprintf() formatting specifier in the overwrite
  dialog that caused it to crash on Solaris. Reported (possibly
  among others) by N. Antic.
* Added option to let window manager position dialogs. Suggested
  by "Martinko". This is the new default behavior, too.
* Added a SelectShell command, that makes select/unselect/toggle
  decisions based on running shell commands. Suggested by me. :)
  See docs/scratch/command_args.txt, or use the GUI. Modified the
  default button layout to put SelectRE/SelectShell together.