Change configure flags for target triples to match GNU#10164

Merged

bors merged 3 commits intorust-lang:masterfrom brson:configure

Oct 31, 2013

+256-226

Commits on Oct 29, 2013

support for GNU configure syntax

cnd
authored and
brson
committed
Correct prefix / CFG_PREFIX work in configure / install.mk

cnd
authored and
brson
committed
support for GNU configure syntax corrections: patch from brson

cnd
authored and
brson
committed