Catchup to current sources in git tree.
Move filladapt to extras, load it contitionally.

Avoids error when a preexisting copy was already loaded (eg, by crappy
distros that a bloated pile of stuff loaded).
Add a convenient `eli-comint-clear-except-command' to shells.
Minor improvements and small fixes.

Regenerate main file.
A bunch of improvements to git-blame.
Add a more convenient `eli-resize-window'.

Influenced by `text-scale-adjust'.  Also, add a timeout argument to
`set-temporary-overlay-map' and use it, since the arrow keys are
convenient to break a sequence but they're used for the sequence in
`eli-resize-window'.