[Bug 3817] InstallShield very slow when copying many small files

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=3817

------- Additional Comments From [e-mail]  2007-12-03 05:41 -------
The vfat / fat32 driver does already have a function for find a filename
case-insensitively and Wine already uses it. It doesn't help the people that are
installing this app on other filesystems.

The comment about using trees and caching the information don't take into
account problems with other processes creating files and having to keep the
cache up to date. The comment about efficient upper-case comparison doesn't
realise that the RtlUpcaseUnicodeString function is about as efficient as it can
be, but it is just being called too many times.