Fix linear alphabet string errors

acinclude.m4

@@ -6901,7 +6901,7 @@ if test -f "$ltmain" && test -n "$tagnames"; then
   for tagname in $tagnames; do
     IFS="$lt_save_ifs"
     # Check whether tagname contains only valid characters
-    case `$echo "X$tagname" | $Xsed -e 's:[[-_ABCDEFGHIJKLMNOPTQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890,/]]::g'` in
+    case `$echo "X$tagname" | $Xsed -e 's:[[-_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890,/]]::g'` in
     "") ;;
     *)  AC_MSG_ERROR([invalid tag name: $tagname])
 	;;

aclocal.m4

@@ -6891,7 +6891,7 @@ if test -f "$ltmain" && test -n "$tagnames"; then
   for tagname in $tagnames; do
     IFS="$lt_save_ifs"
     # Check whether tagname contains only valid characters
-    case `$echo "X$tagname" | $Xsed -e 's:[[-_ABCDEFGHIJKLMNOPTQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890,/]]::g'` in
+    case `$echo "X$tagname" | $Xsed -e 's:[[-_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890,/]]::g'` in
     "") ;;
     *)  AC_MSG_ERROR([invalid tag name: $tagname])
 	;;