RFR: 8272107: Removal of Unsafe::defineAnonymousClass left a dangling C++ class

[Harold Seigel]

Please review this change to remove the now unused CPSlot class.  Uses of CPSlot have been replaced with Symbol*.  The change was tested by running JCK lang and VM tests, Mach5 tiers 1-2 on Linux, Mac OS, and WIndows and Macn5 tiers 3-5 on Linux x64.

Thanks, Harold

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Commit messages:
 - 8272107: Removal of Unsafe::defineAnonymousClass left a dangling C++ class

Changes: https://git.openjdk.java.net/jdk/pull/5070/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5070&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272107
  Stats: 41 lines in 6 files changed: 0 ins; 25 del; 16 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5070.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5070/head:pull/5070

PR: https://git.openjdk.java.net/jdk/pull/5070