RFR: 7903146: TypeTranslator is no longer needed [v2]

[Maurizio Cimadamore]

> Now that ValueLayout has carrier information attached, we no longer need to perform two separate visit on a function type, one to get a FunctionDescriptor and one to get a MethodType. We can just get a FunctionDescriptor and derive everything from there.
> 
> This patch applies several cleanups on OutputFactory, to flatten the code, and remove some spaghetti lambdas. It also drops the FunctionInfo/VarInfo abstraction, since now that we can derive most of the info from layouts, these do not seem to add much value.

Maurizio Cimadamore has updated the pull request incrementally with one additional commit since the last revision:

  Update copyright

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Changes:
  - all: https://git.openjdk.java.net/jextract/pull/14/files
  - new: https://git.openjdk.java.net/jextract/pull/14/files/ec0d65f4..26055ff2

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jextract&pr=14&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jextract&pr=14&range=00-01

  Stats: 9 lines in 8 files changed: 0 ins; 1 del; 8 mod
  Patch: https://git.openjdk.java.net/jextract/pull/14.diff
  Fetch: git fetch https://git.openjdk.java.net/jextract pull/14/head:pull/14

PR: https://git.openjdk.java.net/jextract/pull/14