Patch for libgrypt autoconf macro

[Evgeny Grin]

Other autoconf macros use $SED
autotools can be used on Linux, Unix, Windows and other platforms so it's better to let user to override default sed by setting SED variable.

-- 
Best Wishes,
Evgeny Grin

06.03.2014, 12:16, "Werner Koch" <wk at gnupg.org>:
> Would you be so kind an explain why you need this?  We do not use any
> special options or features of grep or sed.
>
> grep(1) and sed(1) are as standard as test(1) and a basic part of the
> Unix tool kit for now 40 years.  Unix version 6 was the first public
> version and appeared in 1975; both tools have already been part of
> version 4 (see also CACM [1]).