Continuous updates to event queue can hang the library

[jussimalinen]

Several places in SwingLibrary use Jemmy's EventTool.waitNoEvent with time of 200ms. This waits until there is a gap of 200ms during which there are no new events to event queue. The operation timeouts at 3 minutes (!) and fails the keyword call if that happens.

Now if the SUT generates new events for example every 100ms, this of course causes the test to hang for 3 minutes and then to fail.

[jussimalinen]

This commit c97d1b0 should fix this issue. Under the hood we will now still wait for that 200ms gap, but for a maximum time of 1 seconds, after which we will continue the execution normally.