(Mac OS): Update feature support status.
(Mac Input): List supported input scripts. Remove description
about `mac-keyboard-text-encoding'. Mention mouse button
emulation and related variables.
(Mac International): Mention Central European and Cyrillic
support. Now `keyboard-coding-system' is dynamically changed.
Add description about coding system for selection. Add
description about language environment.
(Mac Environment Variables): Mention
`~/.MacOSX/environment.plist'. Give example of command line
arguments. Add Preferences support.
(Mac Directories): Explicitly state that this node is for Mac OS
Classic only.
(Mac Font Specs): Mention specification for scalable fonts. List
supported charsets. Add preferred way of creating fontsets. Add
description about `mac-allow-anti-aliasing'.
(Mac Functions): Add descriptions about `mac-set-file-creator',
`mac-get-file-creator', `mac-set-file-type', `mac-get-file-type',
and `mac-get-preference'.
* ediff-ptch.el (ediff-file-name-sans-prefix): treat nil as an empty
string.
(ediff-fixup-patch-map): better heuristic for intuiting the file names
to patch.
(ediff-prompt-for-patch-file): more intuitive prompt.
* ediff-util.el: use insert-buffer-substring.
* ediff-vers.el (cvs-run-ediff-on-file-descriptor): bug fix.
* viper-cmd.el (viper-change-state): don't move over the field
boundaries in the minibuffer.
(viper-set-minibuffer-style): add viper-minibuffer-post-command-hook.
(viper-minibuffer-post-command-hook): new hook.
(viper-line): don't move cursor at bolp.
* viper-ex.el (ex-pwd, viper-info-on-file): fixed message
* viper-init.el: add alias to make-variable-buffer-local to avoid
compiler warnings.
* viper-macs.el (ex-map): better messages.
* viper-utils.el (viper-beginning-of-field): new function.
* viper.el: replace make-variable-buffer-local with
viper-make-variable-buffer-local everywhere, to avoid warnings.
Delete unused var `old-selected-window'.
(mouse-drag-region-1): Delete unused vars `start-frame' `end-of-range'.
(mouse-drag-secondary): Delete unused var `start-frame'.
for backward compatibility with packages that bind it during
`find-image'. Suggested by Katsumi Yamaoka.
(image-search-load-path): Handle symbols whose values are strings.
