RFR: 8256155: Allow multiple large page sizes to be used on Linux [v35]

[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 with a new target base due to a merge or a rebase. The pull request now contains 57 commits:

 - Check smaller LP sizes in setup
   
   Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>
 - Merge branch 'master' into update_hlp
 - Check large pages =< _large_page_size
   
   Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>
 - Review comments 5_12
   
   Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>
 - Remove reserve_memory_special_huge_tlbfs mods except assert
   
   Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>
 - Merge branch 'master' into update_hlp
 - Merge branch 'master' into update_hlp
 - Remove extranous vm_page_size check
   
   Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>
 - kstefanj review
   
   Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>
 - Set LargePageSizeInBytes to largepage upper limit
   
   Signed-off-by: Marcus G K Williams <marcus.williams at intel.com>
 - ... and 47 more: https://git.openjdk.java.net/jdk/compare/2568d181...a551a5e0

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Changes: https://git.openjdk.java.net/jdk/pull/1153/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1153&range=34
  Stats: 154 lines in 2 files changed: 92 ins; 47 del; 15 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