[jdk8u-dev] RFR: 8194873: right ALT key hotkeys no longer work in Swing components

[Olga Mikhaltsova]

I'd like to backport JDK-8194873 to jdk8u. The same issue is observed there.
The original patch applied not cleanly due to 2 files:
   

>  MotifLookAndFeel.java - differences in the header and in the context;
>  SwingUtilities2.java - difference in the context.

Tested on Windows. All regular tests passed.

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Commit messages:
 - Backport 91f281c8d713e489ddc282f935ebd879485c4b41

Changes: https://git.openjdk.java.net/jdk8u-dev/pull/60/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk8u-dev&pr=60&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8194873
  Stats: 371 lines in 11 files changed: 359 ins; 6 del; 6 mod
  Patch: https://git.openjdk.java.net/jdk8u-dev/pull/60.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk8u-dev pull/60/head:pull/60

PR: https://git.openjdk.java.net/jdk8u-dev/pull/60