RFR: Renamed ContMirror ContinuationWrapper, make cont variable names into… [v2]

[Coleen Phillimore]

> … continuation if pointing at the Java instance.  Now cont variable names are only for the ContinuationWrapper.
> There's only one non-variable name change in vframe.cpp
> Running loom-tier1-3 testing in progress.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  wish C++ would check declarations as well. fix cont names in declarations.

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Changes:
  - all: https://git.openjdk.java.net/loom/pull/121/files
  - new: https://git.openjdk.java.net/loom/pull/121/files/903c5c04..989a7a00

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=loom&pr=121&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=loom&pr=121&range=00-01

  Stats: 6 lines in 1 file changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/loom/pull/121.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/121/head:pull/121

PR: https://git.openjdk.java.net/loom/pull/121