initial revision of synergy. currently semi-supports X windows

on unix, but client screens don't simulate events other than
mouse move.  also not supporting clipboard at all yet and the
main app is just a temporary framework to test with.  must
clean up protocol and communication.

XBase.cpp

@@ -0,0 +1,40 @@
+#include "XBase.h"
+
+// win32 wants a const char* argument to std::exception c'tor
+#if CONFIG_PLATFORM_WIN32
+#define STDEXCEPTARG ""
+#endif
+
+// default to no argument
+#ifndef STDEXCEPTARG
+#define STDEXCEPTARG
+#endif
+
+//
+// XBase
+//
+
+XBase::XBase() : exception(STDEXCEPTARG)
+{
+	// do nothing
+}
+
+XBase::~XBase()
+{
+	// do nothing
+}
+
+const char*				XBase::what() const
+{
+	return getType();
+}
+
+const char*				XBase::getType() const
+{
+	return "XBase.h";
+}
+
+CString					XBase::format(const CString& fmt) const
+{
+	return fmt;
+}