New functions extracted from uncomment-region and comment-region.
(comment-region, comment-region-function, uncomment-region)
(uncomment-region-function): Use them.
`t' to `auto-detect', and type from `boolean' to `choice'.
(grep-compute-defaults): Set `grep-highlight-matches' to `t'
if grep option `--color' is available, or to `nil' otherwise.
(grep-use-null-device): Remove redundant type `boolean' (`choice'
is already defined).
(isearch-toggle-case-fold): Set `isearch-success' to `t'.
(isearch-message-prefix): Add "pending" for isearch-adjusted.
(isearch-other-meta-char): Restore isearch-point unconditionally.
(isearch-query-replace): Add new arg `regexp-flag' and use it.
Set point to start of match if region is not active in transient
mark mode (to include the current match to region boundaries).
Push the search string to `query-replace-from-history-variable'.
Add prompt "Query replace regexp" for isearch-regexp.
Add region beginning/end as last arguments of `perform-replace.'
(isearch-query-replace-regexp): Replace code by the call to
`isearch-query-replace' with arg `t'.
highlight overlays; allow using RET when cursor is over a button.
(cua--highlight-rectangle): Use it.
(cua--rectangle-set-corners): Don't move backwards at eol.
(cua--forward-line): Don't move into void after eob.
(digest_single_submenu): Set lname and lkey in widget_value
instead of name and key.
(update_submenu_strings): New function.
(set_frame_menubar): Remove call to inhibit_garbage_collection,
call update_submenu_strings.
(globals_of_w32menu): Check for Unicode API.
(digest_single_submenu, w32_menu_show): Encode menu strings as
UTF-8 if Unicode API is available.
(utf8to16): New function.
(add_menu_item): Use it when calling Unicode API.
point is set (and displayed) inside rectangle.
(cua--rectangle-operation): Fix for highlight of empty lines.
(cua--highlight-rectangle): Fix highlight for tabs.
Position cursor at left/right edge of rectangle using new `cursor'
property on overlay strings.
(cua--indent-rectangle): Don't tabify.
(cua-rotate-rectangle): Ignore that point has moved.
(mode-line-frame-identification): Sync with x-win.el.
* macfns.c (x_real_positions): Save the current window port and
set a new one before obtaining the global coordinate. Use
FRAME_MAC_WINDOW.
(x_set_name, x_set_title): Encode title to UTF8. Use
SetWindowTitleWithCFString.
(Fx_server_version): Get correct OS version.
* macmenu.c (add_menu_item): Remove unused variable `i'. Don't
let separator items destroy refence constants of other menu items.
* macterm.c (x_update_end): Move SetPortWindowPort to inside
BLOCK_INPUT.
(x_set_offset): Use FRAME_MAC_WINDOW.
* xdisp.c (note_mouse_highlight): Set the mouse pointer shape to
nontext_cursor if it is on a scroll bar.
* s/darwin.h (LIBS_CARBON): New define to specify libraries for
Carbon support.
(LD_SWITCH_SYSTEM_TEMACS): Don't link with unused libstdc++. Use
LIBS_CARBON.
