Fixed the "new arguments" dialog.

When specifying new arguments with File->Arguments dialog,
the new arguments were not being passed to gdb. Now fixed.

This feature applies to 'run' and 'start'.  Remove it from
'attach'.

src/SeerMainWindow.cpp

@@ -132,6 +132,7 @@ const QString& SeerMainWindow::executableName () const {
 }
 
 void SeerMainWindow::setExecutableArguments (const QString& executableArguments) {
+
     gdbWidget->setExecutableArguments(executableArguments);
 }