RFR: 8327379: Make TimeLinearScan a develop flag

[Denghui Dong]

Hi,

Please help review this change that makes TimeLinearScan a develop flag.

Currently, TimeLinearScan is only used in code guarded by '#ifndef PRODUCT'.

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Commit messages:
 - 8327379: Make TimeLinearScan a develop flag

Changes: https://git.openjdk.org/jdk/pull/18125/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18125&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327379
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18125.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18125/head:pull/18125

PR: https://git.openjdk.org/jdk/pull/18125