hg: jdk8u/jdk8u-dev: 8233880: Support compilers with multi-digit major version numbers

[gnu.andrew at redhat.com]

Changeset: 39a7914e14a0
Author:    sgehwolf
Date:      2020-05-11 17:36 +0100
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/rev/39a7914e14a0

8233880: Support compilers with multi-digit major version numbers
Summary: Also includes JDK-8151841 version changes regressed by JDK-8034788
Reviewed-by: aph, andrew

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