Repackage gson to a private package name.
Avoids namespace collision in MapR 3.x.
More README info.
Recompile with javac directly.
Tweak test for running on 0xdata network.
Merge branch 'master' into tomk-repackage-gson

Conflicts:
	R/tests/testdir_javapredict/runit_PDATA_DRF_javapredict_churn_rand_large.R
Merge branch 'master' into tomk-repackage-gson