hg: jdk9/sandbox: 8074099: Even with toolchain type clang, OBJC is set to gcc

[chris.hegarty at oracle.com]

Changeset: fa6d6b488442
Author:    ihse
Date:      2015-03-04 10:47 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/fa6d6b488442

8074099: Even with toolchain type clang, OBJC is set to gcc
Reviewed-by: erikj, ddehaven

! common/autoconf/generated-configure.sh
! common/autoconf/spec.gmk.in
! common/autoconf/toolchain.m4
! make/common/NativeCompilation.gmk