RFR: 8292312: Work around memset() called operator new

[Ioi Lam]

Please review this trivial fix. It blocks my integration for #9849:
- Do not value-initialize the PtrList and PtrTable in the Synchronizer class
- Use a non-default constructor for FixedResourceHashtableStorage

It seems like the problem is always there, but GCC 11 would get tipped the wrong way when I moved the ObjectMonitorsHashtable() constructor from the hpp file to the cpp file in #9849.

I want to make this change independent of  #9849 so it can be reviewed separately, and could be backported more easily when necessary.

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Commit messages:
 - 8292312: Work around memset() called operator new

Changes: https://git.openjdk.org/jdk/pull/9927/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9927&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292312
  Stats: 5 lines in 3 files changed: 1 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/9927.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9927/head:pull/9927

PR: https://git.openjdk.org/jdk/pull/9927