git: openjdk/jdk22: 8323008: filter out harmful -std* flags added by autoconf from CXX

[Christoph Langer]

Changeset: 8db5d865
Author:    Christoph Langer <clanger at openjdk.org>
Date:      2024-01-15 15:13:45 +0000
URL:       https://git.openjdk.org/jdk22/commit/8db5d865c1066c217c5b4e87b9e0881bfb1f5beb

8323008: filter out harmful -std* flags added by autoconf from CXX

Reviewed-by: mdoerr
Backport-of: 68c4286026bc2c0ec0f594e0b96fe03fe5624d6d

! make/autoconf/toolchain.m4
! make/autoconf/util.m4