prep 0.4.0 release

Author: bjori

php_phongo.h

@@ -30,7 +30,7 @@ extern zend_module_entry mongodb_module_entry;
 
 /* FIXME: Its annoying to bump version. Move into phongo_version.h.in */
 #define MONGODB_VERSION_S "0.4.0"
-#define MONGODB_STABILITY_S "devel"
+#define MONGODB_STABILITY_S "alpha"
 #define MONGODB_VERSION   MONGODB_VERSION_S
 
 #ifdef PHP_WIN32