(speedbar-frame-parameters) Add : to custom prompt.

(speedbar-frame-parameters) Add : to custom prompt.
(speedbar-frame-plist) Remove useless comments.
(speedbar-frame-mode) Do not specify height if it is in the param
list.  Use default y position w/out changing it.  If default x
position is a list, keep, calculate the non-list X value when devining
an initial position.
(speedbar-this-file-in-vc) Fix SCCS to use s. not p. files.
(speedbar-tag-group-name-minimum-length): New variable.
(speedbar-frame-parameter): New compatibility function.
(speedbar-frame-mode): Updated to use speedbar-frame-parameter.
(speedbar-apply-one-tag-hierarchy-method): Fixed up taging sub groups
to keep things in the right order, and to help with some naming conventions.
(speedbar-create-tag-hierarchy): Enable buffer local version of
`speedbar-tag-hierarchy-method' in the buffer we are tagging.
(speedbar-line-path) Make DEPTH param optional.  Devine it if absent.
the case, derive it from the cursor location in speedbar.