(eudc-bob-display-jpeg): Use fboundp instead of boundp.
(eudc-bob-save-object): Make the buffer unibyte.
(eudc-bob-generic-keymap): Add new keybinding `!' to pipe the object to
external program.
display-graphic-p.
(eudc-bob-display-jpeg) <!eudc-xemacs-p>: Test create-image bound
and that JPEG is available.
(eudc-bob-toggle-inline-display): Avoid non-existent `imagep'.