merge fix

sql/ha_ndbcluster.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged

BUILD/SETUP.sh

@@ -139,9 +139,17 @@ fi
 #
 base_configs="--prefix=$prefix --enable-assembler "
 base_configs="$base_configs --with-extra-charsets=complex "
-base_configs="$base_configs --enable-thread-safe-client --with-readline "
+base_configs="$base_configs --enable-thread-safe-client "
 base_configs="$base_configs --with-big-tables"
 
+if test -d "$path/../cmd-line-utils/readline"
+then
+    base_configs="$base_configs --with-readline"
+elif test -d "$path/../cmd-line-utils/libedit"
+then
+    base_configs="$base_configs --with-libedit"
+fi
+
 static_link="--with-mysqld-ldflags=-all-static "
 static_link="$static_link --with-client-ldflags=-all-static"
 # we need local-infile in all binaries for rpl000001

configure.in

@@ -2354,6 +2354,7 @@ readline_basedir=""
 readline_dir=""
 readline_h_ln_cmd=""
 readline_link=""
+want_to_use_readline="no"
 
 if expr "$SYSTEM_TYPE" : ".*netware.*" > /dev/null
 then
@@ -2379,6 +2380,7 @@ then
     readline_link="\$(top_builddir)/cmd-line-utils/readline/libreadline.a"
     readline_h_ln_cmd="\$(LN) -s \$(top_srcdir)/cmd-line-utils/readline readline"
     compile_readline=yes
+    want_to_use_readline="yes"
     AC_DEFINE_UNQUOTED(USE_NEW_READLINE_INTERFACE, 1)
 else
     # Use system readline library
@@ -2388,10 +2390,12 @@ else
     MYSQL_CHECK_NEW_RL_INTERFACE
     MYSQL_CHECK_READLINE_DECLARES_HIST_ENTRY
     AC_LANG_RESTORE
-    if [test "$mysql_cv_new_rl_interface" = "yes"]
+    if [test "$mysql_cv_new_rl_interface" = "yes"] && [test -d "./cmd-line-utils/readline"]
     then
-        # Use the new readline interface
+        # Use the new readline interface, but only if the package includes a bundled libreadline
+        # this way we avoid linking commercial source with GPL readline
         readline_link="-lreadline"
+        want_to_use_readline="yes"
     elif [test "$mysql_cv_libedit_interface" = "yes"]
     then
         # Use libedit
@@ -2402,6 +2406,15 @@ else
           versions of libedit or readline])
     fi
 fi
+
+# if there is no readline, but we want to build with readline, we fail
+if [test "$want_to_use_readline" = "yes"] && [test ! -d "./cmd-line-utils/readline"]
+then
+    AC_MSG_ERROR([This commercially licensed MySQL source package can't
+          be built with libreadline. Please use --with-libedit to use
+          the bundled version of libedit instead.])
+fi
+
 #
 # if either readline or libedit is enabled - generate Makefile's for both
 # (to make sure both are included in 'make dist')