Bump the trunk to 2.4a0

Include/patchlevel.h

@@ -20,13 +20,13 @@
 
 /* Version parsed out into numeric values */
 #define PY_MAJOR_VERSION	2
-#define PY_MINOR_VERSION	3
+#define PY_MINOR_VERSION	4
 #define PY_MICRO_VERSION	0
-#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_FINAL
+#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_ALPHA
 #define PY_RELEASE_SERIAL	0
 
 /* Version as a string */
-#define PY_VERSION		"2.3"
+#define PY_VERSION		"2.4a0"
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
    Use this for numeric comparisons, e.g. #if PY_VERSION_HEX >= ... */