[threeten-dev] some makefile and test update

[Xueming Shen]

This is proposed changeset is to

(1) move the tzdb "build" stuff from the make/tool/tzcompiler + make/sun/javazic
into make/javax/time/Makefile. For two reason
     - make the new build infra" stuff to work
     -the tzdb.jar actually has the dependency on those zone impl, so it's more
      reasonable to update the tzdb.jar if those imples updated.

(2) move the TestNG def from the top test properties file
TEST.ROOT into the "local" test/javax/time/TEST.properties.

http://cr.openjdk.java.net/~sherman/jdk8_threeten/tzdbbuild_test

-Sherman