(diff-reverse-direction): Use delete-and-extract-region.
(diff-post-command-hook): Restrict the area so that the hook also works
outside of any diff hunk. This is necessary for the minor-mode.
(diff-mode): Use toggle-read-only and minor-mode-overriding-map-alist.
(diff-minor-mode): Setup the hooks for header-hunk rewriting.
(font-lock-add-keywords): Make it work even if font-lock-mode is nil,
so that it can be used more easily in <foo>-mode-hook. Also make sure
to avoid duplicate entries.
(font-lock-update-removed-keyword-alist): Renamed `major-mode'->`mode'.
(font-lock-remove-keywords): Just as was done for `add', allow it to
work even if font-lock-mode is nil. Also make sure we don't modify
any pre-existing list by forcing a copy-sequence. Finally rename
`major-mode' to `mode'.
(font-lock-fontify-syntactic-anchored-keywords)
(font-lock-fontify-anchored-keywords)
(font-lock-fontify-keywords-region): Use line-end-position.
Don't make `font-lock-multiline' local (it's now done in
font-lock-set-defaults).
(font-lock-set-defaults): Make `font-lock-multiline' local. Also
move the `font-lock-fontified' creation to inside the `unless'.
around image definitions and prototypes.
(gamma_correct) [WINDOWSNT]: New prototype.
* w32term.c (x_make_frame_visible): Replace call to
input_poll_signal with poll_for_input.
* window.c [WINDOWSNT]: Include w32term.h.
* xdisp.c [WINDOWSNT]: Include w32term.h.
* makefile.nt: Add dependencies on w32gui.h.
(OBJ1): Include atimer.obj.
($(BLD)\atimer.obj): New dependency rule.
* w32.c (sigmask): New function (does nothing).
(sigunblock): Ditto.
* frame.c [WINDOWSNT]: Include w32term.h.
* w32gui.h (struct W32FontStruct): Add ascent and descent slots.
* lread.c (syms_of_lread): Fix literal newlines.
* emacs.c (USAGE): Split into USAGE1 and USAGE2, to work-around
the string constant limit (2048 bytes) in MSVC.
(main): Ditto.
