K 10
svn:author
V 3
pfg
K 8
svn:date
V 27
2012-07-11T22:17:58.714945Z
K 7
svn:log
V 327
Merge libedit adjustment from NetBSD.

On recent versions of NetBSD's libedit, el_gets
now sets el_len to -1 on error so we can
distinguish between a NULL string and an error.

This fixes sh from exiting with newer versions
of libedit now allowing EINTR to return.

Obtained from:	NetBSD
Reviewed by:	jilles
MFC after:	3 weeks

END