RFR: 8296645: org.openjdk.bench.javax.tools.Javac leaves class files in current directory [v2]

[Aleksey Shipilev]

> $ java -jar ../build/linux-x86_64-server-release/images/test/micro/benchmarks.jar org.openjdk.bench.javax.tools.Javac.testCompile -f 1 -r 1s -w 1s
> ...
> 
> $ ls
> Apan.class
> ``` 
> 
> Additional testing:
>  - [x] Eyeballing CWD and `/tmp` contents after the benchmark -- no leftovers

Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into JDK-8296645-javac-bench-class-files
 - Fix indenting
 - Fix

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/11055/files
  - new: https://git.openjdk.org/jdk/pull/11055/files/d272fc6b..f472ba6e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11055&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11055&range=00-01

  Stats: 10394 lines in 442 files changed: 4082 ins; 4461 del; 1851 mod
  Patch: https://git.openjdk.org/jdk/pull/11055.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11055/head:pull/11055

PR: https://git.openjdk.org/jdk/pull/11055