[PATCH] update to the latest libedit version and remove libreadline deps

[Baptiste Daroussin]

Hi all,

I have updated the patch that update libedit, respecting all your remarks.

http://people.freebsd.org/~bapt/update-libedit.patch

Normally most of our improvements (for bin/sh) are back in the patch,
as far as I can test sh works great.

I also make libedit install readline/tilde.h and readline/history.h as
a symlink on readline/readline.h to avoid patching too much things,
now only Makefile and gvinum.c needs patching.

for gvinum we only need to add string.h.

We also have to think a way to update ports to use devel/readline
before breaking lot's of them removing libreadline from base. But I
have no idea is there are good procedures for that purpose.

regards,
Bapt