readline: Update to version 8.2 plus patch 1

readline: Update to version 8.2 plus patch 1

- Update from version 8.1 to 8.2 plus patch 1
- Update of rootfile
- Changelog
    version 8.2
	There is a new framework for readline timeouts, including new public
	 functions to set timeouts and query how much time is remaining before a
	 timeout hits, and a hook function that can trigger when readline times out.
	 There is a new state value to indicate a timeout. There is a new option:
	 `enable-active-region'. This separates control of the active region and
	 bracketed-paste. It has the same default value as bracketed-paste, and
	 enabling bracketed paste enables the active region. Users can now turn off
	 the active region while leaving bracketed paste enabled. Two new bindable
	 string variables are available; their values are terminal escape sequences
	 that set the color used to display the active region and turn it off,
	 respectively. If set, these are used in place of terminal standout mode.
	 Finally, Readline now checks for changes to locale settings
	 (LC_ALL/LC_CTYPE/LANG) each time it is called, and modifies the appropriate
	 locale-specific display and key binding variables when the locale changes.
	There are a few bug fixes in the redisplay code when restoring the prompt
	 after a digit-argument prompt or incremental search back to a prompt that
	 contains invisible multibyte characters. There are more checks for read
	 errors, especially in the middle of readline commands; previous versions
	 could loop or return incorrect data. Full details are below.
	GNU Readline is a library which provides programs with an input
	 facility including command-line editing and history.  Editing
	 commands similar to both emacs and vi are included.  The GNU
	 History library, which provides facilities for managing a list of
	 previously-typed command lines and an interactive command line
	 recall facility similar to that provided by csh, is also present.
	 The history library is built as part of the readline as well as
	 separately.
	1. Changes to Readline
		a. Fixed a problem with cleaning up active marks when using callback mode.
		b. Fixed a problem with arithmetic comparison operators checking the version.
		c. Fixed a problem that could cause readline not to build on systems without
		   POSIX signal functions.
		d. Fixed a bug that could cause readline to crash if the application removed
		   the callback line handler before readline read all typeahead.
		e. Added additional checks for read errors in the middle of readline commands.
		f. Fixed a redisplay problem that occurred when switching from the digit-
		   argument prompt `(arg: N)' back to the regular prompt and the regular
		   prompt contained invisible characters.
		g. Fixed a problem with restoring the prompt when aborting an incremental
		   search.
		h. Fix a problem with characters > 128 not being displayed correctly in certain
		   single-byte encodings.
		i. Fixed a problem with unix-filename-rubout that caused it to delete too much
		   when applied to a pathname consisting only of one or more slashes.
		j. Fixed a display problem that caused the prompt to be wrapped incorrectly if
		   the screen changed dimensions during a call to readline() and the prompt
		   became longer than the screen width.
		k. Fixed a problem that caused the \r output by turning off bracketed paste
		   to overwrite the line if terminal echo was disabled.
		l. Fixed a bug that could cause colored-completion-prefix to not display if
		   completion-prefix-display-length was set.
		m. Fixed a problem with line wrapping prompts when a group of invisible
		   characters runs to the right edge of the screen and the prompt extends
		   longer then the screen width.
		n. Fixed a couple problems that could cause rl_end to be set incorrectly by
		   transpose-words.
		o. Prevent some display problems when running a command as the result of a
		   trap or one bound using `bind -x' and the command generates output.
		p. Fixed an issue with multi-line prompt strings that have one or more
		   invisible characters at the end of a physical line.
		q. Fixed an issue that caused a history line's undo list to be cleared when
		   it should not have been.
		r. When replacing a history entry, make sure the existing entry has a non-NULL
		   timestamp before copying it; it may have been added by the application, not
		   the history library.
	2. New Features in Readline
		a. There is now an HS_HISTORY_VERSION containing the version number of the
		   history library for applications to use.
		b. History expansion better understands multiple history expansions that may
		   contain strings that would ordinarily inhibit history expansion (e.g.,
		   `abc!$!$').
		c. There is a new framework for readline timeouts, including new public
		   functions to set timeouts and query how much time is remaining before a
		   timeout hits, and a hook function that can trigger when readline times
		   out. There is a new state value to indicate a timeout.
		d. Automatically bind termcap key sequences for page-up and page-down to
		   history-search-backward and history-search-forward, respectively.
		e. There is a new `fetch-history' bindable command that retrieves the history
		   entry corresponding to its numeric argument. Negative arguments count back
		   from the end of the history.
		f. `vi-undo' is now a bindable command.
		g. There is a new option: `enable-active-region'. This separates control of
		   the active region and bracketed-paste. It has the same default value as
		   bracketed-paste, and enabling bracketed paste enables the active region.
		   Users can now turn off the active region while leaving bracketed paste
		   enabled.
		h. rl_completer_word_break_characters is now `const char *' like
		   rl_basic_word_break_characters.
		i. Readline looks in $LS_COLORS for a custom filename extension
		   (*.readline-colored-completion-prefix) and uses that as the default color
		   for the common prefix displayed when `colored-completion-prefix' is set.
		j. Two new bindable string variables: active-region-start-color and
		   active-region-end-color. The first sets the color used to display the
		   active region; the second turns it off. If set, these are used in place
		   of terminal standout mode.
		k. New readline state (RL_STATE_EOF) and application-visible variable
		   (rl_eof_found) to allow applications to detect when readline reads EOF
		   before calling the deprep-terminal hook.
		l. There is a new configuration option: --with-shared-termcap-library, which
		   forces linking the shared readline library with the shared termcap (or
		   curses/ncurses/termlib) library so applications don't have to do it.
		m. Readline now checks for changes to locale settings (LC_ALL/LC_CTYPE/LANG)
		   each time it is called, and modifies the appropriate locale-specific display
		   and key binding variables when the locale changes.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>