Fix interruption of remote target on Windows.

When interrupting a remote target process on Windows, a Ctrl-C event must be sent through GDB's console window.  Calling DebugBreakProcess on GDB, just leaves GDB unresponsive.

This pull request will will always have GDB started with a console window.  CodeLite will attach to this console window and hide it if showTerminal is disabled by the user.  On interrupting the target, a Ctrl-C event is sent through the console window.