Merge readline.c r1.106 from NetBSD:

Add trailing NULL's to the varargs functions as required.
(John Spencer)

Merge array bounds fixes from NetBSD:

Bounds search for reallocated index, from OpenBSD via Andreas Fett

map.c 1.34
map.h 1.10
parse.c 1.27
read.c 1.71

These changes are included in the recent libedit UTF-8 update, but I'm running into these bugs now and would like to get the fix in prior to the MFC.