RFR: 8308850: Change JVM options with small ranges from 64 to 32 bits, for globals.hpp

[Afshin Zafari]

The JVM options that are in range of `int` type are converted in `globals.hpp` and other files where affected.

### Tests
tiers 1-4 passed for linux-x64, linux-x64-debug, windows-x64, windows-x64-debug
tier1 all passed.

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Commit messages:
 - Fixed intx->int for Wconversion warnings.

Changes: https://git.openjdk.org/jdk/pull/15164/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15164&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308850
  Stats: 19 lines in 5 files changed: 0 ins; 0 del; 19 mod
  Patch: https://git.openjdk.org/jdk/pull/15164.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15164/head:pull/15164

PR: https://git.openjdk.org/jdk/pull/15164