* mh-folder.el (mh-tool-bar-init): Autoload.

* mh-folder.el (mh-tool-bar-init): Autoload.
(mh-folder-mode): Call mh-tool-bar-init conditionally in XEmacs. Set
scoped variables image-load-path and load-path with updated
mh-image-load-path before calling mh-tool-bar-folder-buttons-init.

* mh-letter.el (mh-tool-bar-init): Autoload.
(mh-letter-mode): Call mh-tool-bar-init conditionally in XEmacs. Set
scoped variables image-load-path and load-path with updated
mh-image-load-path before calling mh-tool-bar-letter-buttons-init.

* mh-show.el (mh-tool-bar-init): Autoload.
(mh-show-mode): Perform tool bar stuff conditionally in XEmacs and GNU
Emacs.

* mh-tool-bar.el (mh-tool-bar-define): Don't quote stuff in error
messages per conventions.
(mh-tool-bar-folder-buttons-init)
(mh-tool-bar-letter-buttons-init): Don't call mh-image-load-path.
(mh-tool-bar-define call): Format.

* mh-utils.el (mh-image-directory, mh-image-load-path-called-flag):
Delete.
(mh-image-load-path): Incorporate changes from Gnus team. Biggest
changes are that it no longer uses/sets mh-image-directory or
mh-image-load-path-called-flag, and returns the updated path rather
than change it.
(mh-logo-display): Change usage of mh-image-load-path.