Fix double-wrong tr usage: tr '[a-z]' '[A-Z]'

First of all, it should be written as: tr 'a-z' 'A-Z'
ranges not encolosed in [] according to POSIX, so [] just included
in the replacement.
Second, it should be written: tr '[:lower:]' '[:upper:]'
since a-z and A-Z may have different length in some locales.

lib/libedit/makelist

@@ -146,7 +146,7 @@ case $FLAG in
 #
 -fh)
     cat $FILES | $AWK '/el_action_t/ { print $3 }' | \
-    sort | tr '[a-z]' '[A-Z]' | $AWK '
+    sort | tr '[:lower:]' '[:upper:]' | $AWK '
 	BEGIN {
 	    printf("/* Automatically generated file, do not edit */\n");
 	    printf("#ifndef _h_fcns_c\n#define _h_fcns_c\n");