RFR: 8271602: Add Math.ceilDiv() family parallel to Math.floorDiv() family [v2]

[Raffaello Giulietti]

> This PR ideally continues #5285, which has been closed as a consequence of inadvertently removing the branch on my repo. See there for initial discussion.
> 
> Sorry for the mess.

Raffaello Giulietti has updated the pull request incrementally with one additional commit since the last revision:

  8271602: Add Math.ceilDiv() family parallel to Math.floorDiv() family

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5341/files
  - new: https://git.openjdk.java.net/jdk/pull/5341/files/7afe3cf0..8e368361

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5341&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5341&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5341.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5341/head:pull/5341

PR: https://git.openjdk.java.net/jdk/pull/5341