[PATCH 00/11] TUI cleanups

[Tom Tromey]

I started looking more seriously at fixing the TUI's UTF-8 problem.  I
think I have an answer to that -- use pads for the source window to
avoid the truncation problem on both ends -- but before starting, I
found a number of small oddities remaining in the TUI.  So, this
series cleans up various small issues I found, removing more unneeded
TUI code in the process.

Let me know what you think.

More cleanups could be done -- some methods are in the wrong file, and
some things (especially the "locator" window and its associated files)
are misnamed.  However, I wasn't sure if a big rearrangement +
renaming would be welcome, so I didn't do that.  It's easy enough to
do in the future if desired.

Tom