RFR: 8280366: (fs) Restore Files.createTempFile javadoc [v2]

[Brian Burkhalter]

> This change reverts commit fb8fdc0fbf17dd7e900cb688df4917b97b26b9ab and then makes a smaller change to the verbiage of `Files.createTempFile `.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8280366: Revert to state prior to JDK-8279990 change modulo fixing a grammatical error

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7202/files
  - new: https://git.openjdk.java.net/jdk/pull/7202/files/8599059b..27d9bd7d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7202&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7202&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7202.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7202/head:pull/7202

PR: https://git.openjdk.java.net/jdk/pull/7202