RFR: 8256155: Allow multiple large page sizes to be used on Linux [v36]

[Marcus G K Williams]

> Change the meaning of LargePageSizeInBytes to be the maximum large page size the JVM may use (not the only one). A default value of zero will mean to allow the JVM use large page sizes up to the system's default large page size.

Marcus G K Williams has updated the pull request incrementally with one additional commit since the last revision:

  Reuse flags & p vars, fix enclose
  
  Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1153/files
  - new: https://git.openjdk.java.net/jdk/pull/1153/files/a551a5e0..6a00a18d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1153&range=35
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1153&range=34-35

  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1153.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1153/head:pull/1153

PR: https://git.openjdk.java.net/jdk/pull/1153