* mh-customize.el (mh-toolbar): Rename to mh-tool-bar.

* mh-customize.el (mh-toolbar): Rename to mh-tool-bar.
(mh-tool-bar-search-function): Sync docstrings with manual.
(mh-tool-bar-customize): Replace toolbar with tool bar in docstring.
(mh-tool-bar-letter-help): Fix manual reference.
(mh-xemacs-use-toolbar-flag): Rename to mh-xemacs-use-tool-bar-flag.
Initialize to mh-xemacs-has-tool-bar-flag. Sync docstrings with
manual.
(mh-xemacs-toolbar-position): Rename to mh-xemacs-tool-bar-position.
Initialize to nil. Drop "no tool bar" option (redundant) and change
"Same As Default Tool Bar" setting to nil. Sync docstrings with
manual.
(mh-tool-bar-define): Replace toolbar with tool-bar or tool bar
depending on context.
(mh-toolbar-init): Rename to mh-tool-bar-init. Simplified condition
for calling set-specifier. Only look at the value of
mh-xemacs-use-tool-bar-flag.
(mh-tool-bar-folder-buttons, mh-tool-bar-letter-buttons): Sync
docstrings with manual.

* mh-comp.el (mh-letter-mode): Use mh-tool-bar-init instead of
mh-toolbar-init.

* mh-e.el (mh-folder-mode): Ditto.

* mh-utils.el (mh-show-mode): Ditto.