hg: build-infra/jdk9: Apparently we did *not* use +w for solaris in old build. :-&

[magnus.ihse.bursie at oracle.com]

Changeset: 3b16eddd8647
Author:    ihse
Date:      2016-02-10 22:30 +0100
URL:       http://hg.openjdk.java.net/build-infra/jdk9/rev/3b16eddd8647

Apparently we did *not* use +w for solaris in old build. :-&

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