hg: jdk9/dev: 8019470: Changes needed to compile JDK 8 on MacOS with clang compiler

[henry.jen at oracle.com]

Changeset: 77c150b417d8
Author:    henryjen
Date:      2014-02-25 23:38 -0800
URL:       http://hg.openjdk.java.net/jdk9/dev/rev/77c150b417d8

8019470: Changes needed to compile JDK 8 on MacOS with clang compiler
Reviewed-by: erikj, ihse

! common/autoconf/flags.m4
! common/autoconf/generated-configure.sh
! common/autoconf/toolchain.m4