Several small bugs with Swedish Ä in path names

[Lennart Borgman]

I just tested Emacs on a friends computer. His computer runs Windows XP 
in Swedish. Some of this bugs I was able to reproduce in Windows 2000 
English.

1) File name completion: With a file name like "Ägaren" (begins with 
swedish letter Ä - uppercase A with two dots) you can not "complete" the 
name if you first enter a lowercase ä. File name completion is otherwise 
case insensitive on w32. (I tested this in C-x C-f.)

2) In an interactive shell (M-x shell) running cmd.exe the Ä in the path 
is shown as \216. However using Cygwin bash.exe for the shell the letter 
is shown correctly.

These two bugs I can reproduce on w2k English. However I saw another 
strange bug I can not reproduce here:

xp-se1) Starting with "emacs -Q" and opening a new file with "C-x C-f 
~/new.el" and then again doing C-x C-f to open a new file then 
"/Ägaren/" in the prompt string is replaced with "/çaren/".

This was done with CVS Emacs from 2005-11-28 on w32. I have no idea 
whether this is w32 specific or not.