8181761: add explicit @build actions for jdk.test.lib classes in all :tier2 tests
Reviewed-by: alanb

8180805: move RandomFactory to the top level testlibrary
Reviewed-by: bpb, rriggs

8134984: Text files should end in exactly one newline
Summary: automated fixup of newlines at end-of-file via the usual perl one-liner
Reviewed-by: chegar, sherman

8050374: More Signature tests
Reviewed-by: valeriep