hg: jdk8u/jdk8u/hotspot: 8267545: [8u] Enable Xcode 12 builds on macOS

[paul.hohensee at gmail.com]

Changeset: 782f3b88b5ba
Author:    phh
Date:      2021-06-09 21:45 +0000
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/782f3b88b5ba

8267545: [8u] Enable Xcode 12 builds on macOS
Summary: Makefile and source code patches to enable Xcode 12 builds
Reviewed-by: simonis, andrew
Contributed-by: benty at amazon.com, hohensee at amazon.com

! make/bsd/makefiles/gcc.make
! make/bsd/makefiles/jsig.make
! src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp
! src/share/vm/utilities/ostream.cpp