Refactored some platform dependent code into a new library,

lib/arch.  This should make porting easier.  Will probably
continue to refactor a little more, moving platform dependent
event handling stuff into lib/platform.

lib/arch/XArch.cpp

@@ -0,0 +1,33 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2002 Chris Schoeneman
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ * 
+ * This package is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "XArch.h"
+
+//
+// XArch
+//
+
+std::string
+XArch::what() const throw()
+{
+	try {
+		if (m_what.empty() && m_eval != NULL) {
+			m_what = m_eval->eval();
+		}
+	}
+	catch (...) {
+		// ignore
+	}
+	return m_what;
+}