RFR: 8267468: Rename refill waster counters in ThreadLocalAllocBuffer

[Albert Mingkun Yang]

Followup of https://bugs.openjdk.java.net/browse/JDK-8234532 (https://github.com/openjdk/jdk/pull/3756), dropping the "slow" segment in various counter names.

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

Commit messages:
 - alias map
 - second
 - first

Changes: https://git.openjdk.java.net/jdk/pull/4146/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4146&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267468
  Stats: 45 lines in 4 files changed: 2 ins; 0 del; 43 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4146.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4146/head:pull/4146

PR: https://git.openjdk.java.net/jdk/pull/4146