RFR: 8281507: Two javac tests have bad jtreg `@clean` tags [v2]

[Aleksey Shipilev]

> Apparently, jtreg does not support `*` globbing. It now throws errors for upcoming jtreg 7.
> 
> Additional testing:
>  - [x] Affected tests still pass

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

  Use clean * instead

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7398/files
  - new: https://git.openjdk.java.net/jdk/pull/7398/files/15b4a79f..598f013f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7398&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7398&range=00-01

  Stats: 6 lines in 2 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7398.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7398/head:pull/7398

PR: https://git.openjdk.java.net/jdk/pull/7398