Reorganized source tree. Moved client.cpp into cmd/synergy as

synergy.cpp and server.cpp into cmd/synergyd as synergyd.cpp.
Moved and renamed related files.  Moved remaining source files
into lib/....  Modified and added makefiles as appropriate.
Result is that library files are under lib with each library
in its own directory and program files are under cmd with each
command in its own directory.

lib/http/XHTTP.cpp

@@ -0,0 +1,120 @@
+#include "XHTTP.h"
+#include "CHTTPProtocol.h"
+#include "stdsstream.h"
+
+//
+// XHTTP
+//
+
+XHTTP::XHTTP(SInt32 statusCode) :
+	XBase(),
+	m_status(statusCode),
+	m_reason(getReason(statusCode))
+{
+	// do nothing
+}
+
+XHTTP::XHTTP(SInt32 statusCode, const CString& reasonPhrase) :
+	XBase(),
+	m_status(statusCode),
+	m_reason(reasonPhrase)
+{
+	// do nothing
+}
+
+XHTTP::~XHTTP()
+{
+	// do nothing
+}
+
+SInt32
+XHTTP::getStatus() const
+{
+	return m_status;
+}
+
+CString
+XHTTP::getReason() const
+{
+	return m_reason;
+}
+
+void
+XHTTP::addHeaders(CHTTPReply&) const
+{
+	// do nothing
+}
+
+CString
+XHTTP::getWhat() const throw()
+{
+	const char* reason;
+	if (m_reason.empty()) {
+		reason = getReason(m_status);
+	}
+	else {
+		reason = m_reason.c_str();
+	}
+	return format("XHTTP", "%{1} %{2}",
+								CStringUtil::print("%d", m_status).c_str(),
+								reason);
+}
+
+const char*
+XHTTP::getReason(SInt32 status)
+{
+	switch (status) {
+	case 300: return "Multiple Choices";
+	case 301: return "Moved Permanently";
+	case 302: return "Moved Temporarily";
+	case 303: return "See Other";
+	case 304: return "Not Modified";
+	case 305: return "Use Proxy";
+	case 400: return "Bad Request";
+	case 401: return "Unauthorized";
+	case 402: return "Payment Required";
+	case 403: return "Forbidden";
+	case 404: return "Not Found";
+	case 405: return "Method Not Allowed";
+	case 406: return "Not Acceptable";
+	case 407: return "Proxy Authentication Required";
+	case 408: return "Request Time-out";
+	case 409: return "Conflict";
+	case 410: return "Gone";
+	case 411: return "Length Required";
+	case 412: return "Precondition Failed";
+	case 413: return "Request Entity Too Large";
+	case 414: return "Request-URI Too Large";
+	case 415: return "Unsupported Media Type";
+	case 500: return "Internal Server Error";
+	case 501: return "Not Implemented";
+	case 502: return "Bad Gateway";
+	case 503: return "Service Unavailable";
+	case 504: return "Gateway Time-out";
+	case 505: return "HTTP Version not supported";
+	default:  return "";
+	}
+}
+
+
+//
+// XHTTPAllow
+//
+
+XHTTPAllow::XHTTPAllow(const CString& allowedMethods) :
+	XHTTP(405),
+	m_allowed(allowedMethods)
+{
+	// do nothing
+}
+
+XHTTPAllow::~XHTTPAllow()
+{
+	// do nothing
+}
+
+void
+XHTTPAllow::addHeaders(CHTTPReply& reply) const
+{
+	reply.m_headers.push_back(std::make_pair(CString("Allow"), m_allowed));
+}