updated for version 7.4.300

Problem:    The way config.cache is removed doesn't always work.
Solution:   Always remove config.cache. (Ken Takata)

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    300,
 /**/
     299,
 /**/