Split maxscale.h to public and private parts

This header defines some general functions and maxscale main() return
values. Most of it is still public, but there were some functions
which were moved to a core header.

include/maxscale/maxscale.h

@@ -13,45 +13,34 @@
  */
 
 /**
- * @file maxscale.h
- *
- * Some general definitions for MaxScale
- *
- * @verbatim
- * Revision History
- *
- * Date     Who             Description
- * 05/02/14 Mark Riddoch    Initial implementation
- *
- * @endverbatim
- */
+ * @file include/maxscale/maxscale.h Some general definitions for MaxScale
+*/
 
 #include <maxscale/cdefs.h>
+
 #include <time.h>
 
 MXS_BEGIN_DECLS
 
 /* Exit status for MaxScale */
-#define MAXSCALE_SHUTDOWN       0   /* Good shutdown */
-#define MAXSCALE_BADCONFIG      1   /* Configuration fiel error */
+#define MAXSCALE_SHUTDOWN       0   /* Normal shutdown */
+#define MAXSCALE_BADCONFIG      1   /* Configuration file error */
 #define MAXSCALE_NOLIBRARY      2   /* No embedded library found */
-#define MAXSCALE_NOSERVICES     3   /* No servics are running */
-#define MAXSCALE_ALREADYRUNNING 4   /* MaxScale is already runing */
+#define MAXSCALE_NOSERVICES     3   /* No services could be started */
+#define MAXSCALE_ALREADYRUNNING 4   /* MaxScale is already running */
 #define MAXSCALE_BADARG         5   /* Bad command line argument */
 #define MAXSCALE_INTERNALERROR  6   /* Internal error, see error log */
 
-void maxscale_reset_starttime(void);
+/**
+ * Return the time when MaxScale was started.
+ */
 time_t maxscale_started(void);
-int maxscale_uptime(void);
 
 /**
- * Initiate shutdown of MaxScale.
+ * Return the time MaxScale has been running.
  *
- * This functions informs all threads that they should stop the
- * processing and exit.
- *
- * @return How many times maxscale_shutdown() has been called.
+ * @return The uptime in seconds.
  */
-int maxscale_shutdown(void);
+int maxscale_uptime(void);
 
 MXS_END_DECLS