RFR: 8280948: [TESTBUG] Colocate tonga test bug4659800.java to a regression test

[Manukumar V S]

Colocate the tonga based test Swing_JButton/Automated/bug4659800/bug4659800.java to a regression based automated test.
This test checks whether typing <Space> key generates ActionEvent on focused Button or not, in all Look And Feels in all platforms.
This test is run 10 times per platform(mac,linux,windows) and it passed all the times(30/30).

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Commit messages:
 - 8280948: [TESTBUG] Colocate tonga test bug4659800.java to a regression test

Changes: https://git.openjdk.java.net/jdk/pull/7296/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7296&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280948
  Stats: 147 lines in 1 file changed: 147 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7296.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7296/head:pull/7296

PR: https://git.openjdk.java.net/jdk/pull/7296