[code-reflection] Integrated: Hat fix vj parsing

[Gary Frost]

Fixes to example-violajones. Bug was reported that XML parser failed if cascade did not have size element, but instead had explicit width and height.

Also added the ability to select the image and cascade via properties.  


java @hat/run ffi-opencl -Dimage=highett -Dcascade=haarcascade_frontalface_default  violajones

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Commit messages:
 - Fix cascade parsing, and allow image/cascade to be selected via properties
 - Converging on new float4x4
 - Converging on new float4x4
 - Zpos using floats
 - Triangle2d using floats
 - collapse new/old elite mesh reader
 - collapse new/old elite mesh reader
 - collapse new/old elite mesh reader
 - collapse new/old elite mesh reader
 - collapse new/old elite mesh reader
 - ... and 5 more: https://git.openjdk.org/babylon/compare/3db08a3e...39eb2f05

Changes: https://git.openjdk.org/babylon/pull/658/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=658&range=00
  Stats: 10710 lines in 28 files changed: 9434 ins; 897 del; 379 mod
  Patch: https://git.openjdk.org/babylon/pull/658.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/658/head:pull/658

PR: https://git.openjdk.org/babylon/pull/658