RFR: 8255973: Add more logging to debug JDK-8255917

[Yumin Qi]

Hi, Please review

  JDK-8255917 failed on not finding the committed region from the _reserved_regions list when try to add the region to the committed list. It looks like possible the region was released without logged. 
  Added a log tag for tracing Native Memory Tracking (NMT) add/remove recorded info. This could help us to identify the problem for NMT or the code behind NMT. Function pd_attempt_reserve_memory_at could fail, but no message logged, so added a logging for its failure. 

Tests: tier1-4, local jtreg.

-------------

Commit messages:
 - Fix tab space
 - 8255973: Add more logging to debug JDK-8255917

Changes: https://git.openjdk.java.net/jdk/pull/1150/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1150&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255973
  Stats: 45 lines in 5 files changed: 36 ins; 1 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1150.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1150/head:pull/1150

PR: https://git.openjdk.java.net/jdk/pull/1150