Inferior interruption handling changes

On UNIX, use SIGINT to interrupt the child, as the remote debugger's
-exec-interrupt does so as well.
On Windows, we get a SIGTRAP which we cannot influence.
As we currently do not know on which OS a remote debuggee is running,
accept either signal in that mode.

Reviewed-By: ossi

src/plugins/debugger/procinterrupt.cpp

@@ -61,7 +61,7 @@ bool Debugger::Internal::interruptProcess(int pID)
 bool Debugger::Internal::interruptProcess(int pID)
 {
     if (pID > 0) {
-        if (kill(pID, SIGTRAP) == 0)
+        if (kill(pID, SIGINT) == 0)
             return true;
     }
     return false;