Review MySQL default options.

The default values for MySQL WITH clause options wasn't really tested
and broke on simple cases, the new set of defaults is known to work in
many cases (most?).

Other combinations of options will need some review work, and we might
need to consider preventing some of them, that's for another patch tho.

src/sources/mysql.lisp

@@ -306,14 +306,14 @@
 			    state-before
 			    state-after
 			    state-indexes
-			    truncate
-			    data-only
-			    schema-only
-			    create-tables
-			    include-drop
-			    create-indexes
-			    reset-sequences
-			    foreign-keys
+			    (truncate        nil)
+			    (data-only       nil)
+			    (schema-only     nil)
+			    (create-tables   t)
+			    (include-drop    t)
+			    (create-indexes  t)
+			    (reset-sequences t)
+			    (foreign-keys    t)
 			    (identifier-case :downcase) ; or :quote
 			    only-tables
 			    including

test/sakila.load

@@ -2,8 +2,8 @@ load database
      from      mysql://root@localhost/sakila
      into postgresql:///sakila
 
- WITH include drop, create tables, no truncate,
-      create indexes, reset sequences, foreign keys
+ -- WITH include drop, create tables, no truncate,
+ --      create indexes, reset sequences, foreign keys
 
   SET maintenance_work_mem to '128MB', work_mem to '12MB', search_path to 'sakila'