RFR: bug: no warning shown for parameterized conversions [v6]

[Vicente Romero]

> no warning is shown for parameterized conversions

Vicente Romero has updated the pull request incrementally with one additional commit since the last revision:

  adding ParameterizedTypeRelation

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Changes:
  - all: https://git.openjdk.java.net/valhalla/pull/666/files
  - new: https://git.openjdk.java.net/valhalla/pull/666/files/a2da2108..45e09eec

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=valhalla&pr=666&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=valhalla&pr=666&range=04-05

  Stats: 126 lines in 1 file changed: 33 ins; 54 del; 39 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/666.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/666/head:pull/666

PR: https://git.openjdk.java.net/valhalla/pull/666