RFR: 8283627: Outdated comment in MachineDescriptionTwosComplement.isLP64 [v2]

[Daniel Skantz]

> Update MachineDescriptionTwosComplement.java comment to indicate that LP64 machines are no longer uncommon.

Daniel Skantz has updated the pull request incrementally with one additional commit since the last revision:

  JDK-8283627 - Update MachineDescription.java
  
  JDK-8283627 - Update comment also in MachineDescription.java regarding LP64 (as noted by @plummercj, @sspitsyn)

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9967/files
  - new: https://git.openjdk.org/jdk/pull/9967/files/c927a8c7..6a0efae0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9967&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9967&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/9967.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9967/head:pull/9967

PR: https://git.openjdk.org/jdk/pull/9967