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/mt/CMutex.cpp

@@ -0,0 +1,136 @@
+#include "CMutex.h"
+#include "CLog.h"
+
+//
+// CMutex
+//
+
+CMutex::CMutex()
+{
+	init();
+}
+
+CMutex::CMutex(const CMutex&)
+{
+	init();
+}
+
+CMutex::~CMutex()
+{
+	fini();
+}
+
+CMutex&
+CMutex::operator=(const CMutex&)
+{
+	return *this;
+}
+
+#if HAVE_PTHREAD
+
+#include <pthread.h>
+#include <cerrno>
+
+void
+CMutex::init()
+{
+	pthread_mutex_t* mutex = new pthread_mutex_t;
+	int status = pthread_mutex_init(mutex, NULL);
+	assert(status == 0);
+//	status = pthread_mutexattr_settype(mutex, PTHREAD_MUTEX_RECURSIVE);
+//	assert(status == 0);
+	m_mutex = reinterpret_cast<void*>(mutex);
+}
+
+void
+CMutex::fini()
+{
+	pthread_mutex_t* mutex = reinterpret_cast<pthread_mutex_t*>(m_mutex);
+	int status = pthread_mutex_destroy(mutex);
+	logc(status != 0, (CLOG_ERR "pthread_mutex_destroy status %d", status));
+	assert(status == 0);
+	delete mutex;
+}
+
+void
+CMutex::lock() const
+{
+	pthread_mutex_t* mutex = reinterpret_cast<pthread_mutex_t*>(m_mutex);
+	int status = pthread_mutex_lock(mutex);
+
+	switch (status) {
+	case 0:
+		// success
+		return;
+
+	case EDEADLK:
+		assert(0 && "lock already owned");
+		break;
+
+	case EAGAIN:
+		assert(0 && "too many recursive locks");
+		break;
+
+	default:
+		log((CLOG_ERR "pthread_mutex_lock status %d", status));
+		assert(0 && "unexpected error");
+	}
+}
+
+void
+CMutex::unlock() const
+{
+	pthread_mutex_t* mutex = reinterpret_cast<pthread_mutex_t*>(m_mutex);
+	int status = pthread_mutex_unlock(mutex);
+
+	switch (status) {
+	case 0:
+		// success
+		return;
+
+	case EPERM:
+		assert(0 && "thread doesn't own a lock");
+		break;
+
+	default:
+		log((CLOG_ERR "pthread_mutex_unlock status %d", status));
+		assert(0 && "unexpected error");
+	}
+}
+
+#endif // HAVE_PTHREAD
+
+#if WINDOWS_LIKE
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+void
+CMutex::init()
+{
+	CRITICAL_SECTION* mutex = new CRITICAL_SECTION;
+	InitializeCriticalSection(mutex);
+	m_mutex = reinterpret_cast<void*>(mutex);
+}
+
+void
+CMutex::fini()
+{
+	CRITICAL_SECTION* mutex = reinterpret_cast<CRITICAL_SECTION*>(m_mutex);
+	DeleteCriticalSection(mutex);
+	delete mutex;
+}
+
+void
+CMutex::lock() const
+{
+	EnterCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(m_mutex));
+}
+
+void
+CMutex::unlock() const
+{
+	LeaveCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(m_mutex));
+}
+
+#endif // WINDOWS_LIKE