SHELL32: cleanup, create unicode versions of some functions

[Mike McCormack]

>>-        if (strcasecmp ( szData1, szData2 )!=0 )
>>+        if (strcasecmp( szData1, szData2 ))

> As a common rule strcasecmp should never be used in Wine code, since
> it introduces problem with portability and unexpected side effects
> when locale of the underlying system differs from a Wine one.
> 
> You could make it a part of your clean up as well :-)

There's quite a few strcasecmp calls revealed by:

find . -name \*.c -exec grep strcasecmp {} \; -ls

We probably need somebody to go through and clean them all up.  Maybe a 
janitorial task?

Mike