Remove extra backets in tr test.

src/configure

@@ -1515,9 +1515,9 @@ TRSTRINGS=`echo ABCdef | $TR 'a-z' 'A-Z' 2>/dev/null | grep ABCDEF`
 TRCLASS=`echo ABCdef | $TR ':lower:' ':upper:' 2>/dev/null | grep ABCDEF`
 
 if test "$TRSTRINGS" = "ABCDEF"; then
-  TRARGS="'[a-z]' '[A-Z]'"
+  TRARGS="'a-z' 'A-Z'"
 elif test "$TRCLASS" = "ABCDEF"; then
-  TRARGS="\"[:lower:]\" \"[:upper:]\""
+  TRARGS="\":lower:\" \":upper:\""
 else
   { echo "configure: error: "Can\'t find method to covert from upper to lower case with tr"" 1>&2; exit 1; }
 fi

src/configure.in

@@ -323,9 +323,9 @@ TRSTRINGS=`echo ABCdef | $TR '[a-z]' '[A-Z]' 2>/dev/null | grep ABCDEF`
 TRCLASS=`echo ABCdef | $TR '[:lower:]' '[:upper:]' 2>/dev/null | grep ABCDEF`
 
 if test "$TRSTRINGS" = "ABCDEF"; then
-  TRARGS="'[[a-z]]' '[[A-Z]]'"
+  TRARGS="'[a-z]' '[A-Z]'"
 elif test "$TRCLASS" = "ABCDEF"; then
-  TRARGS="\"[[:lower:]]\" \"[[:upper:]]\""
+  TRARGS="\"[:lower:]\" \"[:upper:]\""
 else
   AC_MSG_ERROR("Can\'t find method to covert from upper to lower case with tr")
 fi