Set version to 2.6a0, seems more consistent.
diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index 75cd8d2..1753370 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -26,7 +26,7 @@
 #define PY_RELEASE_SERIAL	0
 
 /* Version as a string */
-#define PY_VERSION		"2.6a1"
+#define PY_VERSION		"2.6a0"
 
 /* Subversion Revision number of this file (not of the repository) */
 #define PY_PATCHLEVEL_REVISION  "$Revision$"