* lisp/term/xterm.el (xterm-update-cursor): New user option.
(xterm--init): Use it.
(xterm--post-command-hook): New function for all xterm
functionality installed in 'post-command-hook'.
(xterm--init-frame-title): Install it.
(xterm--init-update-cursor, xterm--set-cursor-type)
(xterm--update-cursor-type, xterm--update-cursor-color): New
functions.
(xterm--cursor-type-to-int): New constant.
* doc/emacs/display.texi (Cursor Display):
* etc/NEWS: Document the new feature.
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