reverted min limit for ft_min_word_len back to 1

sql/mysqld.cc

@@ -3406,7 +3406,7 @@ struct my_option my_long_options[] =
   { "ft_min_word_len", OPT_FT_MIN_WORD_LEN,
     "The minimum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable.",
     (gptr*) &ft_min_word_len, (gptr*) &ft_min_word_len, 0, GET_ULONG,
-    REQUIRED_ARG, 4, 2, HA_FT_MAXLEN, 0, 1, 0},
+    REQUIRED_ARG, 4, 1, HA_FT_MAXLEN, 0, 1, 0},
   { "ft_max_word_len", OPT_FT_MAX_WORD_LEN,
     "The maximum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable.",
     (gptr*) &ft_max_word_len, (gptr*) &ft_max_word_len, 0, GET_ULONG,