RFR: 8275536: [TEST] java.io.File and java.nio.File should return the same timestamp for lastModified [v2]

[Clive Verghese]

> The test validated that the precision returned by `java.io.File.lastModified` and `java.nio.file.Files.getLastModifiedTime` are the same.

Clive Verghese has updated the pull request incrementally with one additional commit since the last revision:

  Update function and variable names

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6054/files
  - new: https://git.openjdk.java.net/jdk/pull/6054/files/a2a3f6e9..a0bb4a05

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6054&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6054&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6054.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6054/head:pull/6054

PR: https://git.openjdk.java.net/jdk/pull/6054