8068927: AARCH64: better handling of aarch64- triples
Summary: convert aarch64- to arm-, let upstream code do the work, then convert back to aarch64-
Reviewed-by: ihse

8064357: AARCH64: Top-level JDK changes
Reviewed-by: ihse, twisti

8005284: build-infra: nonstandard copyright headers under common/autoconf/build-aux
Reviewed-by: katleman

7074397: Build infrastructure changes (makefile re-write)
Summary: New makefiles transition, old and new living side by side for now.
Reviewed-by: ohair, jjg, dholmes, ohrstrom, erikj, ihse, tgranat, ykantser
Contributed-by: ohrstrom <fredrik.ohrstrom@oracle.com>, erikj <erik.joelsson@oracle.com>, ihse <magnus.ihse.bursie@oracle.com>, tgranat <torbjorn.granat@oracle.com>, ykantser <yekaterina.kantserova@oracle.com>