put back in slow

pkg/c3/motes.h

@@ -1099,6 +1099,7 @@
 #   define c3__slon   c3_s4('s','l','o','n')
 #   define c3__slop   c3_s4('s','l','o','p')
 #   define c3__slos   c3_s4('s','l','o','s')
+#   define c3__slow   c3_s4('s','l','o','w')
 #   define c3__slur   c3_s4('s','l','u','r')
 #   define c3__slux   c3_s4('s','l','u','x')
 #   define c3__sm     c3_s2('s','m')