find_files(): don't sort files in my_dir(), sort table names

after all engines have discovered their tables
  
side effect: correct alphabetical sorting as in ORDER BY ... COLLATE utf8_bin,
information_schema is no longer the first after find_files(),
tables like #mysql50#zzz are sorted first (as per table name),
not last (as per file name zzz).

mysql-test/r/drop.result

@@ -142,9 +142,9 @@ create table `#mysql50#aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 ERROR 42000: Incorrect table name '#mysql50#aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa12345'
 show tables;
 Tables_in_mysqltestbug26703
+#mysql50#abc`def
 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1234
 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-#mysql50#abc`def
 use test;
 drop database mysqltestbug26703;
 End of 5.1 tests

mysql-test/r/mysqlcheck.result

@@ -176,15 +176,15 @@ t1
 v1
 show tables;
 Tables_in_test
-t1
 #mysql50#v-1
+t1
 v1
 test.t1                                            OK
 show tables;
 Tables_in_test
 t1
-v1
 v-1
+v1
 drop view v1, `v-1`;
 drop table t1;
 SET NAMES utf8;

mysql-test/r/mysqlslap.result

@@ -234,8 +234,8 @@ test
 # 'bug58090' database should be present.
 SHOW DATABASES;
 Database
-information_schema
 bug58090
+information_schema
 mtr
 mysql
 performance_schema

mysql-test/r/schema.result

@@ -5,8 +5,8 @@ Database	Create Database
 foo	CREATE DATABASE `foo` /*!40100 DEFAULT CHARACTER SET latin1 */
 show schemas;
 Database
-information_schema
 foo
+information_schema
 mtr
 mysql
 performance_schema

mysql-test/r/upgrade.result

@@ -33,12 +33,12 @@ show create database `#mysql50#mysqltest-1`;
 ERROR 42000: Unknown database '#mysql50#mysqltest-1'
 show tables in `mysqltest1`;
 Tables_in_mysqltest1
-t1
 t-1
+t1
 show tables in `mysqltest-1`;
 Tables_in_mysqltest-1
-t1
 t-1
+t1
 drop database `mysqltest1`;
 drop database `mysqltest-1`;
 drop table if exists `txu@0023p@0023p1`;