[Rev 01] RFR: 6712: Make agent retransform classes when loaded dynamically

[Jessye Coleman-Shapiro]

> This patch makes the Agent retransform all classes stored in the registry after it is loaded, when it is loaded dynamically.  Previously the transformations specified in the xml file path argument were not always being performed in this dynamic case.
> 
> Let me know what you think.

The pull request has been updated with 1 additional commit.

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Added commits:
 - 6dfb0280: Make getClassNames() return an unmodifiable set

Changes:
  - all: https://git.openjdk.java.net/jmc/pull/60/files
  - new: https://git.openjdk.java.net/jmc/pull/60/files/e7d200e1..6dfb0280

Webrevs:
 - full: https://webrevs.openjdk.java.net/jmc/60/webrev.01
 - incr: https://webrevs.openjdk.java.net/jmc/60/webrev.00-01

  Stats: 16 lines in 3 files changed: 5 ins; 0 del; 11 mod
  Patch: https://git.openjdk.java.net/jmc/pull/60.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/60/head:pull/60

PR: https://git.openjdk.java.net/jmc/pull/60