Make it possible to run ndb tools in the mysql-test(s)

mysql-test/mysql-test-run.sh:
  Added environment variable NDB_TOOLS_DIR

mysql-test/mysql-test-run.sh

@@ -496,6 +496,7 @@ if [ x$SOURCE_DIST = x1 ] ; then
  CHARSETSDIR="$BASEDIR/sql/share/charsets"
  INSTALL_DB="./install_test_db"
  MYSQL_FIX_SYSTEM_TABLES="$BASEDIR/scripts/mysql_fix_privilege_tables"
+ NDB_TOOLS_DIR="$BASEDIR/ndb/tools"
 else
  if test -x "$BASEDIR/libexec/mysqld"
  then
@@ -515,6 +516,7 @@ else
  MYSQL="$CLIENT_BINDIR/mysql"
  INSTALL_DB="./install_test_db --bin"
  MYSQL_FIX_SYSTEM_TABLES="$CLIENT_BINDIR/mysql_fix_privilege_tables"
+ NDB_TOOLS_DIR="$CLIENT_BINDIR"
  if test -d "$BASEDIR/share/mysql/english"
  then
    LANGUAGE="$BASEDIR/share/mysql/english/"
@@ -562,6 +564,7 @@ MYSQL_BINLOG="$MYSQL_BINLOG --no-defaults --local-load=$MYSQL_TMP_DIR $EXTRA_MYS
 MYSQL_FIX_SYSTEM_TABLES="$MYSQL_FIX_SYSTEM_TABLES --no-defaults --host=localhost --port=$MASTER_MYPORT --socket=$MASTER_MYSOCK --user=root --password=$DBPASSWD --basedir=$BASEDIR --bindir=$CLIENT_BINDIR --verbose"
 MYSQL="$MYSQL --host=localhost --port=$MASTER_MYPORT --socket=$MASTER_MYSOCK --user=root --password=$DBPASSWD"
 export MYSQL MYSQL_DUMP MYSQL_BINLOG MYSQL_FIX_SYSTEM_TABLES CLIENT_BINDIR 
+export NDB_TOOLS_DIR
 
 MYSQL_TEST_ARGS="--no-defaults --socket=$MASTER_MYSOCK --database=$DB \
  --user=$DBUSER --password=$DBPASSWD --silent -v --skip-safemalloc \