* help.el (describe-minor-mode): New function implementation.

* help.el (describe-minor-mode): New function implementation.
Accept both minor mode string and minor mode indicator.
(describe-minor-mode-completion-table-for-indicator)
(describe-minor-mode-completion-table-for-symbol): New functions.
minor-mode-list is used here.
(describe-minor-mode-from-symbol): renamed
from (old) describe-minor-mode. Use
describe-minor-mode-completion-table-for-symbol.
Don't use eval. Just use symbol-name.
(describe-minor-mode-from-indicator): Document is updated.
Use `format-mode-line'. Use
describe-minor-mode-from-symbol instead of
describe-minor-mode.
Use describe-minor-mode-completion-table-for-indicator.
(expand-minor-mode-indicator-object): removed.
(lookup-minor-mode-from-indicator): remove the fist white
space from both indicator and anindicator before comparing them.

* bindings.el (mode-line-major-mode-keymap)
(mode-line-minor-mode-keymap): defined keys for the maps
here in `defvar'.