Fix for boost 1.34.1.

src/net/common/socket_startup_cmn.cpp

@@ -22,6 +22,7 @@
 #include <core/openssl_wrapper.h>
 #include <gcrypt.h>
 #include <boost/thread.hpp>
+#include <boost/version.hpp> // solve compatibility issues
 
 extern "C" {
 
@@ -38,11 +39,19 @@ extern "C" {
 		return 0;
 	}
 	int gcry_bmutex_lock(void **obj) {
+#if (BOOST_VERSION) >= 103500
 		((boost::mutex *)(*obj))->lock();
+#else
+		boost::detail::thread::lock_ops<boost::mutex>::lock((boost::mutex *)(*obj));
+#endif
 		return 0;
 	}
 	int gcry_bmutex_unlock(void **obj) {
+#if (BOOST_VERSION) >= 103500
 		((boost::mutex *)(*obj))->unlock();
+#else
+		boost::detail::thread::lock_ops<boost::mutex>::unlock((boost::mutex *)(*obj));
+#endif
 		return 0;
 	}