write(): A patch inspired by Tokio Kikuchi that sorts location entries

first by filename and then by line number.  Closes SF patch #425821.

Also, fixes a problem with duplicate entries.

Tools/i18n/pygettext.py

 #! /usr/bin/env python
-# Originally written by Barry Warsaw <bwarsaw@python.org>
+# Originally written by Barry Warsaw <barry@digicool.com>
 #
-# minimally patched to make it even more xgettext compatible 
+# Minimally patched to make it even more xgettext compatible 
 # by Peter Funk <pf@artcom-gmbh.de>
 
 """pygettext -- Python equivalent of xgettext(1)
@@ -313,7 +313,7 @@ class TokenEater:
             lineno = self.__lineno
         if not msg in self.__options.toexclude:
             entry = (self.__curfile, lineno)
-            self.__messages.setdefault(msg, []).append(entry)
+            self.__messages.setdefault(msg, {})[entry] = 1
 
     def set_filename(self, filename):
         self.__curfile = filename
@@ -325,6 +325,11 @@ class TokenEater:
         # generated by xgettext...
         print >> fp, pot_header % {'time': timestamp, 'version': __version__}
         for k, v in self.__messages.items():
+            # k is the message string, v is a dictionary-set of (filename,
+            # lineno) tuples.  We want to sort the entries in v first by file
+            # name and then by line number.
+            v = v.keys()
+            v.sort()
             if not options.writelocations:
                 pass
             # location comments are different b/w Solaris and GNU:
@@ -444,8 +449,8 @@ def main():
             options.toexclude = fp.readlines()
             fp.close()
         except IOError:
-            sys.stderr.write(_("Can't read --exclude-file: %s") %
-                             options.excludefilename)
+            print >> sys.stderr, _(
+                "Can't read --exclude-file: %s") % options.excludefilename
             sys.exit(1)
     else:
         options.toexclude = []
@@ -468,8 +473,8 @@ def main():
             try:
                 tokenize.tokenize(fp.readline, eater)
             except tokenize.TokenError, e:
-                sys.stderr.write('%s: %s, line %d, column %d\n' %
-                                 (e[0], filename, e[1][0], e[1][1]))
+                print >> sys.stderr, '%s: %s, line %d, column %d' % (
+                    e[0], filename, e[1][0], e[1][1])
         finally:
             if closep:
                 fp.close()