provide an el_init_fd function.

branches: 1.18.8; 1.18.14;
bump shared libraries.

bump minor.

- Add more readline functions, enough for gdb-6.5
- Make el_get varyadic, and implement EL_GETTC.
- XXX: the EL_SETTC api will change in the future.

Tokenization function enhancements:
* Make tok_init(), tok_end(), tok_reset(), tok_line() and tok_str()
publically available in <histedit.h>
* Documented the public functions in editline(3)
* Renamed tok_line() -> tok_str()
* Added new tok_line() which takes a "const LineInfo *" instead of
"const char *" (the former has "cursor" information), and optionally
return the argv index ("int *cursorc") and offset within that index
("int *cursorv"). This means that completion routines can use the
tokenization code to crack the line and easily find which word the
cursor is at. (mmm, context sensitive completion :)
* Fixed TEST/test.c when using "continuation" lines (unmatched quote
or \ at EOL), and added some more DEBUG messages including highlighting
where the cursor is (with a `_').

Implement enough of readline's 4.0 async mode to make gdb happy. This is
not complete yet, but it seems to work...
This required to introduce an unbuffered mode to el_gets(), but that was
a minor change.

- provide enough hooks to compile gdb-5.3
- fix el_get(e, EL_TERMINAL, (char **))

PR/14188: Anthony Mallet: Provide an opaque data pointer to client programs.

bump libedit minor - addition of rl_special_prefixes and rl_completion_append_character

bump libedit minor - added some public stuff for readline emulation

- implement printing a right-side prompt. code derived from similar work
I wrote for tcsh(1) three years ago.
- implement EL_RPROMPT, which allows a setting/getting of a function which
returns a string to be used as the right-side prompt.
- improve HISTORY and AUTHORS sections in editline(3).
- bump shlib minor version for EL_RPROMPT.

XXX: due to an implementation issue, the rprompt has a 1 space gap before the
edge of the logical screen. editline's logical screen is 1 space less
than the full screen width, so there's a 2 space gap between the rprompt
and the right end of the physical screen. i'm not concerned about this.

branches: 1.8.6;
Add a note to update src/distrib/sets/lists/base/shl.*, and add a missing
RCS Id.

* add more checks for NULL pointers in passed arguments
* implement el_get(EditLine *, int op, void *result), which does the
inverse of el_set()
* add EL_EDITMODE operation to el_set and el_get; if non zero editing
is enabled (the default).
* add "edit on | off" editrc command, which modifies EL_EDITMODE.
users can now add '*:edit off' in ~/.editrc as an advisory to
disable editing.

NOTE: at this time EL_EDITMODE is just an indication of the
state of the 'edit' command. It's up to the application to check
this after el_source() or el_parse() to determine if editing is still
required.

* implement CC_REFRESH_BEEP; as per CC_REFRESH but beep as well. this
is useful in completion when a partial completion is found
* remove entry in BUGS about el_parse(); that was fixed a while ago

Bump!

RCSID Police.

PR/4301: Jaromir Dolecek. Add gnu-readline wrapper for editline.

PR/4257: Jaromir Dolecek: history() has no generic error handling and isn't
reentrant. This changes the interface of the history function, so we need
a major number bump.

local