[code-reflection] RFR: Fix balanced parenthesis and structs for the CUDA backend

[Juan Fumero]

Fix balanced parenthesis and structs for the CUDA backend

How to test?


java -cp hat/job.jar hat.java test-suite ffi-opencl

java -cp hat/job.jar hat.java test-suite ffi-cuda

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Commit messages:
 - [hat] CUDA backend vector types fixed
 - [hat] Fix semicolon in C99 structs declaration

Changes: https://git.openjdk.org/babylon/pull/741/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=741&range=00
  Stats: 6 lines in 3 files changed: 3 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/babylon/pull/741.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/741/head:pull/741

PR: https://git.openjdk.org/babylon/pull/741