runtime: Linux/ARM: exit early on OABI systems, and give an error message Fixes issue 2533.
runtime: Linux/ARM: exit early on OABI systems, and give an error message
Fixes issue 2533.

R=rsc
CC=golang-dev
http://codereview.appspot.com/5654045

Committer: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

gnanderson/go,tv42/old-go,apparentlymart/golang,dsriram/golang,apparentlymart/golang,dsriram/golang,dsriram/golang,gnanderson/go,dsriram/golang,apparentlymart/golang,tv42/old-go,tv42/old-go,pombredanne/go-deleteme,tv42/old-go,tv42/old-go,pombredanne/go-deleteme,apparentlymart/golang,pombredanne/go-deleteme,tv42/old-go,dsriram/golang,gnanderson/go,pombredanne/go-deleteme,dsriram/golang,pombredanne/go-deleteme,apparentlymart/golang,apparentlymart/golang,gnanderson/go,pombredanne/go-deleteme,gnanderson/go,gnanderson/go,pombredanne/go-deleteme,gnanderson/go,apparentlymart/golang,dsriram/golang,tv42/old-go