Fixed two problems in winClicker.rb where DL.callbacks weren't being properly removed after use.  DL.remove_callback is now called after the callback is no longer needed, and the callbacks have been modified so that they no longer do a direct return, bypassing the proper conclusion of the Windows call.
Fixed two problems in winClicker.rb where DL.callbacks weren't being properly removed after
use.  DL.remove_callback is now called after the callback is no longer needed, and the callbacks
have been modified so that they no longer do a direct return, bypassing the proper conclusion of
the Windows call.

watir/watir-classic,watir/watir-classic,watir/watir-classic,jarib/watir,jarib/watir,jarib/watir,watir/watir-classic