hg: jdk/sandbox: Trying to sort out EXTRA_CFLAGS. Moving all flag handling to flags.m4.

[magnus.ihse.bursie at oracle.com]

Changeset: a7585ecb9fc2
Author:    ihse
Date:      2018-02-20 20:41 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/a7585ecb9fc2

Trying to sort out EXTRA_CFLAGS. Moving all flag handling to flags.m4.

! make/autoconf/configure.ac
! make/autoconf/flags-cflags.m4
! make/autoconf/flags-ldflags.m4
! make/autoconf/flags.m4
! make/autoconf/hotspot.m4
! make/autoconf/libraries.m4
! make/autoconf/platform.m4
! make/autoconf/toolchain.m4