Add header comments to receivelog.h and streamutil.h.

This commit also adds the include guards to those header files.

Michael Paquier

src/bin/pg_basebackup/receivelog.h

+/*-------------------------------------------------------------------------
+ *
+ * receivelog.h
+ *
+ * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *		  src/bin/pg_basebackup/receivelog.h
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef RECEIVELOG_H
+#define RECEIVELOG_H
+
 #include "libpq-fe.h"
 
 #include "access/xlogdefs.h"
@@ -18,3 +32,5 @@ extern bool ReceiveXlogStream(PGconn *conn,
 				  int standby_message_timeout,
 				  char *partial_suffix,
 				  int fsync_interval);
+
+#endif	/* RECEIVELOG_H */

src/bin/pg_basebackup/streamutil.h

+/*-------------------------------------------------------------------------
+ *
+ * streamutil.h
+ *
+ * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *		  src/bin/pg_basebackup/streamutil.h
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef STREAMUTIL_H
+#define STREAMUTIL_H
+
 #include "libpq-fe.h"
 
 extern const char *progname;
@@ -22,3 +36,5 @@ extern bool feTimestampDifferenceExceeds(int64 start_time, int64 stop_time,
 							 int msec);
 extern void fe_sendint64(int64 i, char *buf);
 extern int64 fe_recvint64(char *buf);
+
+#endif	/* STREAMUTIL_H */