Build failure (NEWBUILD=false) on Mac

jdk8/awt no longer builds with the old build system (make NEWBUILD=false). We need the old build to continue to work for a period to give time to downstream projects (jigsaw in particular) to transition.

Here's a sample build failure on Mac OSX 10.7:

:
Checking for mapfile use in: /Users/albatem/ws/awt/build/macosx-x86_64/lib/libawt_headless.dylib
WARNING: File was not built with a mapfile: /Users/albatem/ws/awt/build/macosx-x86_64/lib/libawt_headless.dylib
Library loads for: /Users/albatem/ws/awt/build/macosx-x86_64/lib/libawt_headless.dylib
/Users/albatem/ws/awt/build/macosx-x86_64/lib/libawt_headless.dylib:
@rpath/libawt_headless.dylib (compatibility version 1.0.0, current version 1.0.0)
@rpath/libjvm.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
@rpath/libawt.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.1.0)
@rpath/libjava.dylib (compatibility version 1.0.0, current version 1.0.0)
RUNPATH for: /Users/albatem/ws/awt/build/macosx-x86_64/lib/libawt_headless.dylib
         path @loader_path/. (offset 12)
         path @loader_path/.. (offset 12)
make[4]: *** No rule to make target `/Users/albatem/ws/awt/build/macosx-x86_64/classes/sun/lwawt/macosx/EventDispatchAccess.class', needed by `/Users/albatem/ws/awt/build/macosx-x86_64/tmp/sun/sun.lwawt/awt_lwawt/.classes.list'. Stop.