hg: jdk/submit: 8234930: Use MAP_JIT when allocating pages for code cache on macOS

[vkempik at azul.com]

Changeset: aa97db45b420
Author:    akozlov
Date:      2020-08-27 12:40 +0400
URL:       https://hg.openjdk.java.net/jdk/submit/rev/aa97db45b420

8234930: Use MAP_JIT when allocating pages for code cache on macOS

! README
! src/hotspot/os/aix/os_aix.cpp
! src/hotspot/os/bsd/os_bsd.cpp
! src/hotspot/os/linux/os_linux.cpp
! src/hotspot/os/windows/os_windows.cpp
! src/hotspot/share/memory/virtualspace.cpp
! src/hotspot/share/runtime/os.cpp
! src/hotspot/share/runtime/os.hpp