Fix minor bug and add test of connection with new/old/without passwords

libmysql/libmysql.c:
  Small fix (resulted in connection without database even if one is specified)
sql/mini_client.cc:
  The same fix for replication copy

libmysql/libmysql.c

@@ -2233,7 +2233,6 @@ Try also with PIPE or TCP/IP
       bfill(end, SCRAMBLE_LENGTH, 'x');
       end+=SCRAMBLE_LENGTH;
       *end=0;
-      end++;
     }
     else  /* For empty password*/
     {

mysql-test/r/connect.result

+show tables;
+Tables_in_mysql
+columns_priv
+db
+func
+host
+tables_priv
+user
+show tables;
+Tables_in_test
+grant ALL on *.* to test@localhost identified by "gambling";
+grant ALL on *.* to test@127.0.0.1 identified by "gambling";
+show tables;
+Tables_in_mysql
+columns_priv
+db
+func
+host
+tables_priv
+user
+show tables;
+Tables_in_test
+update mysql.user set password=old_password("gambling2") where user="test";
+flush privileges;
+show tables;
+Tables_in_mysql
+columns_priv
+db
+func
+host
+tables_priv
+user
+show tables;
+Tables_in_test

mysql-test/t/connect.test

+# This test is to check various cases of connections
+# with right and wrong password, with and without database 
+# Unfortunately the check is incomplete as we can't handle errors on connect
+# Also we can't connect without database
+
+#connect (con1,localhost,root,,"");
+#show tables;
+connect (con1,localhost,root,,mysql);
+show tables;
+connect (con1,localhost,root,,test);
+show tables;
+
+# Re enable this one day if error handling on connect will take place
+
+#connect (con1,localhost,root,z,test2);
+#--error 1045
+#connect (con1,localhost,root,z,);
+#--error 1045
+
+grant ALL on *.* to test@localhost identified by "gambling";
+grant ALL on *.* to test@127.0.0.1 identified by "gambling";
+
+# Now check this user with different databases
+
+#connect (con1,localhost,test,gambling,"");
+#show tables;
+connect (con1,localhost,test,gambling,mysql);
+show tables;
+connect (con1,localhost,test,gambling,test);
+show tables;
+
+# Re enable this one day if error handling on connect will take place
+
+#connect (con1,localhost,test,,test2);
+#--error 1045
+#connect (con1,localhost,test,,"");
+#--error 1045
+#connect (con1,localhost,test,zorro,test2);
+#--error 1045
+#connect (con1,localhost,test,zorro,);
+#--error 1045
+
+
+
+# check if old password version also works
+update mysql.user set password=old_password("gambling2") where user="test";
+flush privileges;
+
+#connect (con1,localhost,test,gambling2,"");
+#show tables;
+connect (con1,localhost,test,gambling2,mysql);
+show tables;
+connect (con1,localhost,test,gambling2,test);
+show tables;
+
+# Re enable this one day if error handling on connect will take place
+
+#connect (con1,localhost,test,,test2);
+#--error 1045
+#connect (con1,localhost,test,,);
+#--error 1045
+#connect (con1,localhost,test,zorro,test2);
+#--error 1045
+#connect (con1,localhost,test,zorro,);
+#--error 1045
+
+

sql/mini_client.cc

@@ -815,7 +815,6 @@ mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
       bfill(end, SCRAMBLE_LENGTH, 'x');
       end+=SCRAMBLE_LENGTH;
       *end=0;
-      end++;
     }
     else  /* For empty password*/
     {