Resolve XERCESC-1595.

 - Adds compatibility with non-POSIX old System-V tr implementations
   by using [] to delimite character ranges. This works since in the
   case of translation, the [ and ] characters are simply translated
   to themselves by the POSIX tr.
   
Thanks to Scott Cantor for the report.



git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@408936 13f79535-47bb-0310-9956-ffa450edef68

m4/xerces_msgloader_selection.m4

@@ -88,7 +88,7 @@ AC_DEFUN([XERCES_MSGLOADER_SELECTION],
 	AC_MSG_CHECKING([for which MsgLoader to use (choices:$ml_list)])
 	for i in 1 2; do
 		# Swap upper/lower case in the ml_list
-		ml_list=`echo $ml_list | tr 'A-Za-z' 'a-zA-Z'`
+		ml_list=`echo $ml_list | tr '[a-z][A-Z]' '[A-Z][a-z]'`
 		
 		# Check for each msgloader, in implicit rank order
 		case $ml_list in

m4/xerces_netaccessor_selection.m4

@@ -116,7 +116,7 @@ AC_DEFUN([XERCES_NETACCESSOR_SELECTION],
 	AC_MSG_CHECKING([for which NetAccessor to use (choices:$na_list)])
 	for i in 1 2; do
 		# Swap upper/lower case in string:
-		na_list=`echo $na_list | tr 'A-Za-z' 'a-zA-Z'`
+		na_list=`echo $na_list | tr '[a-z][A-Z]' '[A-Z][a-z]'`
 		
 		# Check for each netaccessor, in implicit rank order
 		case $na_list in

m4/xerces_transcoder_selection.m4

@@ -124,7 +124,7 @@ AC_DEFUN([XERCES_TRANSCODER_SELECTION],
 	AC_MSG_CHECKING([for which Transcoder to use (choices:$tc_list)])
 	for i in 1 2; do
 		# Swap upper/lower case in the tc_list
-		tc_list=`echo $tc_list | tr 'A-Za-z' 'a-zA-Z'`
+		tc_list=`echo $tc_list | tr '[a-z][A-Z]' '[A-Z][a-z]'`
 		
 		# Check for each transcoder, in implicit rank order
 		case $tc_list in