git: openjdk/jdk20u: master: 8304871: Use default visibility for static library builds

[Severin Gehwolf]

Changeset: 71deb0b0
Author:    Severin Gehwolf <sgehwolf at openjdk.org>
Date:      2023-04-04 12:08:34 +0000
URL:       https://git.openjdk.org/jdk20u/commit/71deb0b089ef0fa46de1e06c5a0c8dd040cba4ae

8304871: Use default visibility for static library builds

Backport-of: f0dba218ac00c0c577400b4d864ba79a9938aef7

! make/autoconf/flags-cflags.m4