hg: jdk/submit: 8246032: Implementation of JEP 347: Enable C++14 Language Features

[kim.barrett at oracle.com]

Changeset: 3a436b65fd0a
Author:    kbarrett
Date:      2020-07-22 00:13 -0400
URL:       https://hg.openjdk.java.net/jdk/submit/rev/3a436b65fd0a

8246032: Implementation of JEP 347: Enable C++14 Language Features
Summary: Update build configuration to use C++14
Reviewed-by: jlaskey, mdoerr, ihse, erikj

! doc/building.html
! doc/building.md
! make/autoconf/flags-cflags.m4
! make/autoconf/flags-ldflags.m4
! make/autoconf/lib-std.m4
! make/autoconf/spec.gmk.in
! make/autoconf/toolchain.m4
! make/autoconf/toolchain_windows.m4
! make/hotspot/gensrc/GensrcAdlc.gmk
! make/modules/jdk.hotspot.agent/Lib.gmk