hg: jdk9/sandbox: 8140593: Add configure parameter for devkit for the build compiler

[chris.hegarty at oracle.com]

Changeset: 5f7679c96d7d
Author:    erikj
Date:      2015-10-29 17:11 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/5f7679c96d7d

8140593: Add configure parameter for devkit for the build compiler
Reviewed-by: ihse

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