hg: build-infra/jdk9: Introduce HOTSPOT_CHECK_JVM_VARIANT and HOTSPOT_CHECK_JVM_FEATURE and start using them.

[magnus.ihse.bursie at oracle.com]

Changeset: bd6556ad4e55
Author:    ihse
Date:      2016-02-10 10:42 +0100
URL:       http://hg.openjdk.java.net/build-infra/jdk9/rev/bd6556ad4e55

Introduce HOTSPOT_CHECK_JVM_VARIANT and HOTSPOT_CHECK_JVM_FEATURE and start using them.

! common/autoconf/flags.m4
! common/autoconf/generated-configure.sh
! common/autoconf/help.m4
! common/autoconf/hotspot.m4
! common/autoconf/jdk-options.m4
! common/autoconf/lib-std.m4
! common/autoconf/libraries.m4