RFR: Note frames that are on the heap, rather than addressing mode

[Coleen Phillimore]

... for interpreted frames.
This changes "addressing mode" to a boolean whether the frame is on the heap instead.  The compiler frames don't have code that uses the relative offsets but the frames can be marked as on-heap anyway.
There's one place that I passed false, not sure if that's right.
Not urgent to code review.
Tested with: alias loomjprt='mach5 --patch-based --extra-src-dirs /scratch/cphillim/hg/jdk-loom -j loom-tier1,loom-tier2,loom-tier3'

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Commit messages:
 - Note frames that are on the heap, rather than addressing mode for interpreted frames.
 - Note frames that are on the heap, rather than addressing mode for interpreted frames.

Changes: https://git.openjdk.java.net/loom/pull/106/files
 Webrev: https://webrevs.openjdk.java.net/?repo=loom&pr=106&range=00
  Stats: 152 lines in 20 files changed: 18 ins; 51 del; 83 mod
  Patch: https://git.openjdk.java.net/loom/pull/106.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/106/head:pull/106

PR: https://git.openjdk.java.net/loom/pull/106