<Swing Dev> RFR 8186549: move ExtendedRobot closer to tests

[Alexandre (Shura) Iline]

Hi.

Please take a look on this fix for JDK-8186549.

For testing I have selected tests and groups of tests which use the ExtendedRobot class. The tests show the same pass rate. There are still few tests which use lib/testlibrary, they are not affected by this fix.

Task: https://bugs.openjdk.java.net/browse/JDK-8186549
Webrev: http://cr.openjdk.java.net/~shurailine/8186549/webrev.00
Tests used for testing the fix: http://cr.openjdk.java.net/~shurailine/8186549/extended_robot_tests

Shura