RFR: 8286185: The Java manpage can be more platform inclusive

[David Holmes]

This is mainly an expansion of the included platforms by changing "linux and macOS" to "Non-Windows". There are a few additional examples, and clarification that they are just examples. There are also some minor edits and corrections I spotted.

One actual fix relates to the "control-break" -> "control-" change. I can factor that out if needed (or just add an additional issue to the PR).

This doesn't attempt to give complete platform recognition for all OpenJDK platforms. Two areas where anyone interested could file a further RFE is the support of DTrace on BSD systems other than macOS; and the use of RTM locking on Power8 architecture (existing documentation is all about Intel TSX on x86).

Thanks.

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

Commit messages:
 - 8286185: The Java manpage can be more platform inclusive

Changes: https://git.openjdk.org/jdk/pull/11340/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11340&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8286185
  Stats: 57 lines in 1 file changed: 19 ins; 3 del; 35 mod
  Patch: https://git.openjdk.org/jdk/pull/11340.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11340/head:pull/11340

PR: https://git.openjdk.org/jdk/pull/11340