Some minor improvements to CompilationMemoryStatistic. More details are in [JDK-8337031](https://bugs.openjdk.org/browse/JDK-8337031)
Testing: test/hotspot/jtreg/compiler/print/CompileCommandPrintMemStat.java test/hotspot/jtreg/serviceability/dcmd/compiler/CompilerMemoryStatisticTest.java ------------- Commit messages: - Update comments in tests to reflect new output format - 8337031: Improvements to CompilationMemoryStatistic Changes: https://git.openjdk.org/jdk/pull/20304/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20304&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8337031 Stats: 173 lines in 6 files changed: 77 ins; 21 del; 75 mod Patch: https://git.openjdk.org/jdk/pull/20304.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20304/head:pull/20304 PR: https://git.openjdk.org/jdk/pull/20304
