* viper-cmd.el (viper-preserve-cursor-color): new test that avoids
rewrawing the screen when changing cursor color.
(viper-insert-state-pre-command-sentinel,
viper-replace-state-pre-command-sentinel,
viper-replace-state-post-command-sentinel): use
viper-preserve-cursor-color.
Many functions changed to use viper= instead of = when comparing
characters.
* viper-util.el (viper-memq-char,viper=): new functions for
working with characters.
(viper-change-cursor-color): fixed buglet.
Many functions changed to use viper= instead of = when comparing
characters.
* viper.el (viper-insert-state-mode-list): added eshell.
* ediff-init.el (ediff-before-setup-hook): new hook.
Several typos fixed in various docstrings.
* ediff-merg.el (ediff-show-clashes-only): docstring typo fixed.
* ediff-nult.el (ediff-before-session-group-setup-hooks): new
hook.
(ediff-show-meta-buffer): run ediff-before-session-group-setup-hooks.
* ediff-util.el (ediff-setup): run ediff-before-setup-hook.
(ediff-other-buffer): use selected buffers if in Buffer-menu buffer.
(ediff-get-selected-buffers): new function.
* ediff-vers.el (ediff-vc-internal,ediff-rcs-internal,
ediff-vc-merge-internal,ediff-rcs-merge-internal): use
save-window-excursion.
* ediff-wind.el (ediff-skip-unsuitable-frames): more robust
termination check in while loop.
* ediff.el (ediff-get-default-file-name): better defaults when in
dired buffer.
(ediff-files,ediff-merge-files,ediff-files3,
ediff-merge-files-with-ancestor): use ediff-get-default-file-name.
