Rename T files to avoid name clashes

There is already common/utils/config.h. This file(name) is hardcoded as
it is included into asn1c, and cannot be renamed. To avoid a name clash
and confusing, we rename T's config.h/c to configuration.h/c.

common/utils/T/tracer/configuration.h

@@ -0,0 +1,10 @@
+#ifndef __COMMON_UTILS_T_TRACER_CONFIG__H__
+#define __COMMON_UTILS_T_TRACER_CONFIG__H__
+
+void clear_remote_config(void);
+void append_received_config_chunk(char *buf, int length);
+void load_config_file(char *filename);
+void verify_config(void);
+void get_local_config(char **txt, int *len);
+
+#endif /* __COMMON_UTILS_T_TRACER_CONFIG__H__ */