diff --git a/BUILD/SETUP.sh b/BUILD/SETUP.sh
index 215d7ba24b9..b899b9a7d9b 100755
--- a/BUILD/SETUP.sh
+++ b/BUILD/SETUP.sh
@@ -6,12 +6,15 @@ then
   exit 1
 fi
 
+prefix_configs="--prefix=/usr/local/mysql"
 just_print=
 just_configure=
 full_debug=
 while test $# -gt 0
 do
   case "$1" in
+  --prefix=* ) prefix_configs="$1"; shift ;;
+  --with-debug=full ) full_debug="=full"; shift ;;
   -c | --just-configure ) just_configure=1; shift ;;
   -n | --just-print | --print ) just_print=1; shift ;;
   -h | --help ) cat <<EOF; exit 0 ;;
@@ -19,12 +22,11 @@ Usage: $0 [-h|-n] [configure-options]
   -h, --help              Show this help message.
   -n, --just-print        Don't actually run any commands; just print them.
   -c, --just-configure    Stop after running configure.
-
-Any other options will be passed directly to configure.
+  --with-debug=full       Build with full debug.
+  --prefix=path           Build with prefix 'path'.
 
 Note:  this script is intended for internal use by MySQL developers.
 EOF
-  --with-debug=full ) full_debug="=full"; shift ;;
   * )
     echo "Unknown option '$1'"
     exit 1
@@ -70,7 +72,7 @@ debug_extra_cflags="-O1 -Wuninitialized"
 base_cxxflags="-felide-constructors -fno-exceptions -fno-rtti"
 amd64_cxxflags="-DBIG_TABLES"
 
-base_configs="--prefix=/usr/local/mysql --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-readline"
+base_configs="$prefix_configs --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-readline"
 static_link="--with-mysqld-ldflags=-all-static --with-client-ldflags=-all-static"
 amd64_configs=""
 alpha_configs=""	# Not used yet
diff --git a/include/my_global.h b/include/my_global.h
index 21ba4331cb1..f27eb4733bd 100644
--- a/include/my_global.h
+++ b/include/my_global.h
@@ -530,7 +530,11 @@ typedef SOCKET_SIZE_TYPE size_socket;
 #define FN_LEN		256	/* Max file name len */
 #define FN_HEADLEN	253	/* Max length of filepart of file name */
 #define FN_EXTLEN	20	/* Max length of extension (part of FN_LEN) */
+#ifdef PATH_MAX
+#define FN_REFLEN       PATH_MAX/* Max length of full path-name */
+#else
 #define FN_REFLEN	512	/* Max length of full path-name */
+#endif
 #define FN_EXTCHAR	'.'
 #define FN_HOMELIB	'~'	/* ~/ is used as abbrev for home dir */
 #define FN_CURLIB	'.'	/* ./ is used as abbrev for current dir */
diff --git a/mysql-test/r/lowercase_table2.result b/mysql-test/r/lowercase_table2.result
index cfd8f78a77c..a79b6b04063 100644
--- a/mysql-test/r/lowercase_table2.result
+++ b/mysql-test/r/lowercase_table2.result
@@ -1,4 +1,4 @@
-DROP TABLE IF EXISTS t1,t2,T1,T2,t3,T3,tT;
+DROP TABLE IF EXISTS t1,t2,T1,T2,t3,T3;
 DROP DATABASE IF EXISTS `TEST_$1`;
 DROP DATABASE IF EXISTS `test_$1`;
 CREATE TABLE T1 (a int);
@@ -131,13 +131,13 @@ show tables like 't1%';
 Tables_in_test (t1%)
 t1
 drop table t1;
-create temporary table tT(a int(11), b varchar(8));
-insert into tT values (1, 'abc');
-select * from tT;
+create temporary table T1(a int(11), b varchar(8));
+insert into T1 values (1, 'abc');
+select * from T1;
 a	b
 1	abc
-alter table tT add index (a);
-select * from tT;
+alter table T1 add index (a);
+select * from T1;
 a	b
 1	abc
-drop table tT;
+drop table T1;
diff --git a/mysql-test/r/order_by.result b/mysql-test/r/order_by.result
index 5674fbb9177..3474da93d75 100644
--- a/mysql-test/r/order_by.result
+++ b/mysql-test/r/order_by.result
@@ -778,3 +778,20 @@ sid	wnid
 39560	01019090000
 37994	01019090000
 drop table t1;
+CREATE TABLE t1 (a int);
+INSERT INTO t1 VALUES (2), (1), (1), (2), (1);
+SELECT a FROM t1 ORDER BY a;
+a
+1
+1
+1
+2
+2
+(SELECT a FROM t1) ORDER BY a;
+a
+1
+1
+1
+2
+2
+DROP TABLE t1;
diff --git a/mysql-test/t/lowercase_table2.test b/mysql-test/t/lowercase_table2.test
index 237dcd29950..a766e39abab 100644
--- a/mysql-test/t/lowercase_table2.test
+++ b/mysql-test/t/lowercase_table2.test
@@ -10,7 +10,7 @@ show variables like "lower_case_table_names";
 enable_query_log;
 
 --disable_warnings
-DROP TABLE IF EXISTS t1,t2,T1,T2,t3,T3,tT;
+DROP TABLE IF EXISTS t1,t2,T1,T2,t3,T3;
 DROP DATABASE IF EXISTS `TEST_$1`;
 DROP DATABASE IF EXISTS `test_$1`;
 --enable_warnings
@@ -105,9 +105,9 @@ drop table t1;
 # Bug #7261: Alter table loses temp table
 #
 
-create temporary table tT(a int(11), b varchar(8));
-insert into tT values (1, 'abc');
-select * from tT;
-alter table tT add index (a);
-select * from tT;
-drop table tT;
+create temporary table T1(a int(11), b varchar(8));
+insert into T1 values (1, 'abc');
+select * from T1;
+alter table T1 add index (a);
+select * from T1;
+drop table T1;
diff --git a/mysql-test/t/order_by.test b/mysql-test/t/order_by.test
index 02e49f9750d..9608b7900ee 100644
--- a/mysql-test/t/order_by.test
+++ b/mysql-test/t/order_by.test
@@ -539,3 +539,13 @@ explain select * from t1 where wnid like '0101%' order by wnid;
 select * from t1 where wnid like '0101%' order by wnid;
 
 drop table t1;
+
+#
+# Bug #7672 - a wrong result for a select query in braces followed by order by
+#
+
+CREATE TABLE t1 (a int);
+INSERT INTO t1 VALUES (2), (1), (1), (2), (1);
+SELECT a FROM t1 ORDER BY a;
+(SELECT a FROM t1) ORDER BY a;
+DROP TABLE t1;
diff --git a/sql/item_timefunc.cc b/sql/item_timefunc.cc
index 32813454fef..5a069aee554 100644
--- a/sql/item_timefunc.cc
+++ b/sql/item_timefunc.cc
@@ -2134,7 +2134,6 @@ String *Item_char_typecast::val_str(String *str)
   String *res;
   uint32 length;
 
-#if 0
   if (!charset_conversion)
   {
     if (!(res= args[0]->val_str(str)))
@@ -2144,7 +2143,6 @@ String *Item_char_typecast::val_str(String *str)
     }
   }
   else
-#endif
   {
     // Convert character set if differ
     uint dummy_errors;
@@ -2182,9 +2180,18 @@ String *Item_char_typecast::val_str(String *str)
 void Item_char_typecast::fix_length_and_dec()
 {
   uint32 char_length;
-  charset_conversion= !my_charset_same(args[0]->collation.collation, cast_cs) &&
-		      args[0]->collation.collation != &my_charset_bin &&
-		      cast_cs != &my_charset_bin;
+  /* 
+     We always force character set conversion if cast_cs
+     is a multi-byte character set. It garantees that the
+     result of CAST is a well-formed string.
+     For single-byte character sets we allow just to copy
+     from the argument. A single-byte character sets string
+     is always well-formed. 
+  */
+  charset_conversion= (cast_cs->mbmaxlen > 1) ||
+                      !my_charset_same(args[0]->collation.collation, cast_cs) &&
+                      args[0]->collation.collation != &my_charset_bin &&
+                      cast_cs != &my_charset_bin;
   collation.set(cast_cs, DERIVATION_IMPLICIT);
   char_length= (cast_length >= 0) ? cast_length : 
 	       args[0]->max_length/args[0]->collation.collation->mbmaxlen;
diff --git a/sql/mysql_priv.h b/sql/mysql_priv.h
index cac3dfd4dc5..bd0e1455eb2 100644
--- a/sql/mysql_priv.h
+++ b/sql/mysql_priv.h
@@ -982,7 +982,7 @@ extern Gt_creator gt_creator;
 extern Lt_creator lt_creator;
 extern Ge_creator ge_creator;
 extern Le_creator le_creator;
-extern char language[LIBLEN],reg_ext[FN_EXTLEN];
+extern char language[FN_REFLEN], reg_ext[FN_EXTLEN];
 extern char glob_hostname[FN_REFLEN], mysql_home[FN_REFLEN];
 extern char pidfile_name[FN_REFLEN], system_time_zone[30], *opt_init_file;
 extern char log_error_file[FN_REFLEN];
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index c9d2abb932d..9b39f51fc5b 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -351,7 +351,7 @@ char *default_tz_name;
 char log_error_file[FN_REFLEN], glob_hostname[FN_REFLEN];
 char* log_error_file_ptr= log_error_file;
 char mysql_real_data_home[FN_REFLEN],
-     language[LIBLEN],reg_ext[FN_EXTLEN], mysql_charsets_dir[FN_REFLEN],
+     language[FN_REFLEN], reg_ext[FN_EXTLEN], mysql_charsets_dir[FN_REFLEN],
      *mysqld_user,*mysqld_chroot, *opt_init_file,
      *opt_init_connect, *opt_init_slave,
      def_ft_boolean_syntax[sizeof(ft_boolean_syntax)];