RFR: Reformat internal profiling stats [v2]

[Aleksey Shipilev]

> For HelloWorld/javac workloads, the current output resolution in milliseconds is not enough, we better off printing microseconds. Plus, indenting is not agreeing in interpreter/C1/C2 outputs, fixed that as well.

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Whitespace

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Changes:
  - all: https://git.openjdk.org/leyden/pull/18/files
  - new: https://git.openjdk.org/leyden/pull/18/files/5e1aaa71..3e312405

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=leyden&pr=18&range=01
 - incr: https://webrevs.openjdk.org/?repo=leyden&pr=18&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/leyden/pull/18.diff
  Fetch: git fetch https://git.openjdk.org/leyden.git pull/18/head:pull/18

PR: https://git.openjdk.org/leyden/pull/18