RFR: 8255566: Add size validation when parsing values from VersionProps

[David Holmes]

java.lang.VersionProps defines a number of JDK version properties that are read by the VM and stored in JDK_Version or VM_Version. These values are read into fixed size buffers with no guarantee that the value will actually fit. The proposed solution is to get rid of the fixed size buffers, allocate initially into the thread's resource area then make a permanent copy using os::strdup.

Testing: tiers 1-3

Thanks,
David

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Commit messages:
 - Add missing include
 - 8255566: Add size validation when parsing values from VersionProps

Changes: https://git.openjdk.java.net/jdk/pull/3848/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3848&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255566
  Stats: 38 lines in 2 files changed: 6 ins; 15 del; 17 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3848.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3848/head:pull/3848

PR: https://git.openjdk.java.net/jdk/pull/3848