+ * Revision 1.14 1998-10-28 10:26:59 adam
+ * New functions log_init_file, log_init_level, log_init_prefix.
+ *
+ * Revision 1.13 1998/10/13 16:11:11 adam
+ * Added printf-format check for logf when using GNUC.
+ *
+ * Revision 1.12 1997/09/04 07:59:02 adam
+ * Added include of xmalloc.h.
+ *
+ * Revision 1.11 1997/09/01 08:49:48 adam
+ * New windows NT/95 port using MSV5.0. To export DLL functions the
+ * YAZ_EXPORT modifier was added. Defined in yconfig.h.
+ *
+ * Revision 1.10 1997/05/14 06:53:40 adam
+ * C++ support.
+ *
+ * Revision 1.9 1997/05/01 15:06:42 adam
+ * Added log_mask_str_x routine.
+ *
+ * Revision 1.8 1996/05/01 12:45:00 quinn
+ * *** empty log message ***
+ *
+ * Revision 1.7 1996/02/05 12:24:26 adam
+ * Implemented log_event_{start,end}-functions.
+ *
+ * Revision 1.6 1995/10/10 16:27:06 quinn
+ * *** empty log message ***
+ *
+ * Revision 1.5 1995/09/29 17:12:03 quinn
+ * Smallish
+ *
+ * Revision 1.4 1995/09/27 15:02:47 quinn
+ * Modified function heads & prototypes.
+ *
+ * Revision 1.3 1995/06/19 12:38:25 quinn