Switch commoncpp2 to ucommon to solve dependency conflicts.
libccrtp was depending on commoncpp2, and have been replaced by a version
depending on ucommon as well.
diff --git a/jni/libucommon/sources/inc/commoncpp/commoncpp.h b/jni/libucommon/sources/inc/commoncpp/commoncpp.h
new file mode 100644
index 0000000..d38c9e3
--- /dev/null
+++ b/jni/libucommon/sources/inc/commoncpp/commoncpp.h
@@ -0,0 +1,28 @@
+#ifndef COMMONCPP_COMMONCPP_H_
+#define COMMONCPP_COMMONCPP_H_
+
+#include <commoncpp/config.h>
+#include <commoncpp/pointer.h>
+#include <commoncpp/string.h>
+#include <commoncpp/exception.h>
+#include <commoncpp/thread.h>
+#include <commoncpp/slog.h>
+#include <commoncpp/address.h>
+#include <commoncpp/socket.h>
+#include <commoncpp/udp.h>
+#include <commoncpp/tcp.h>
+#include <commoncpp/dccp.h>
+#include <commoncpp/numbers.h>
+#include <commoncpp/process.h>
+#include <commoncpp/file.h>
+#include <commoncpp/mime.h>
+#include <commoncpp/serial.h>
+#include <commoncpp/tokenizer.h>
+#include <commoncpp/object.h>
+
+#ifdef NEW_STDCPP
+#include <commoncpp/applog.h>
+#endif
+
+#endif
+