8072061: Automatically determine optimal sizes for the CDS regions
Summary: See new C++ class MetaspaceClosure.
Reviewed-by: coleenp, jiangli, mseledtsov

8133180: [TESTBUG] runtime/SharedArchiveFile/SharedStrings.java failed with WhiteBox.class : no such file or directory
Summary: Removed ambiguity on where JarBuilder looks for classes
Reviewed-by: jiangli, ctornqvi, gtriantafill

8132214: [TESTBUG] Create basic shared strings test for CDS archive
Summary: Created new test
Reviewed-by: jiangli, ctornqvi