RFR (M): JDK-8038587: [TESTBUG] Create CDS tests to exercise region sizes and classlist

[Mikhailo Seledtsov]

Please review these 3 new CDS tests, an ongoing effort in implementation 
of the CDS test specification.

     JBS: https://bugs.openjdk.java.net/browse/JDK-8038587
     Webrev: http://cr.openjdk.java.net/~mseledtsov/8038587/webrev.00/
     Testing:
         Local testing on multiple platforms
         JPRT to exercise the added tests: 
2014-03-27-184953.mseledtsov.cds (PASS)
         These tests found 2 bugs, and one potential issue

Thank you,
Misha