move common code file in common directory

remove several unused files
remove mem_block_t that is never used in a different way than a simple heap buffer
move up IP address type and remove duplications of the same struct declaration

common/utils/mem/oai_memory.h

@@ -0,0 +1,49 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#ifndef __MEMORY_H__
+#define __MEMORY_H__
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stddef.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include "common/platform_constants.h"
+//-----------------------------------------------------------------------------
+
+typedef unsigned char uint8_t;
+
+//-----------------------------------------------------------------------------
+
+char* memory_get_path(const char* dirname, const char* filename);
+
+char* memory_get_path_from_ueid(const char* dirname, const char* filename, int ueid);
+
+int memory_read(const char* datafile, void* data, size_t size);
+
+int memory_write(const char* datafile, const void* data, size_t size);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __MEMORY_H__*/