Update patchlevel for version 9.0

Doing this at the very start of the development cycle, not the very end
this time.

The idea is that instead of changing the version numbers to 9.0 when
it's ready for release, it will instead use the NH_DEVEL_STATUS changing
from WIP to BETA then to RELEASED.

include/patchlevel.h

@@ -6,8 +6,8 @@
 #ifndef PATCHLEVEL_H
 #define PATCHLEVEL_H
 
-/* xNetHack 8.0 */
-#define VERSION_MAJOR 8
+/* xNetHack 9.0 */
+#define VERSION_MAJOR 9
 #define VERSION_MINOR 0
 /*
  * PATCHLEVEL is updated for each release.
@@ -17,7 +17,7 @@
  * Incrementing EDITLEVEL can be used to force invalidation of old bones
  * and save files.
  */
-#define EDITLEVEL 1
+#define EDITLEVEL 0
 
 /*
  * Development status possibilities.
@@ -30,7 +30,7 @@
 /*
  * Development status of this NetHack version.
  */
-#define NH_DEVEL_STATUS NH_STATUS_RELEASED
+#define NH_DEVEL_STATUS NH_STATUS_WIP
 
 #ifndef DEBUG  /* allow tool chains to define without causing warnings */
 #define DEBUG