RFR: 8301622: ProcessTools.java compilation gets ThreadDeath deprecation warning

[Afshin Zafari]

### Description
The use of `ThreadDeath` is replaced with checking the exception be of type `Error` and the thread is `TERMINATED`.


### Test
local and mach5 tier1

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Commit messages:
 - 8301622: ProcessTools.java compilation gets ThreadDeath deprecation warning

Changes: https://git.openjdk.org/jdk/pull/12827/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12827&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301622
  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/12827.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12827/head:pull/12827

PR: https://git.openjdk.org/jdk/pull/12827