Long-awaited engine and parser fixes:

- possibly temporary files left on disk with bogus servers giving compressed
content on HEAD requests
- URL hack caused unexpected filename collisions (index.html vs INDEX.HTML)
- "do not erase already downloaded file" option now correctly works!! (it
leaves files linked in the mirror)

Download:
<http://www.httrack.com/page/2/en/index.html#beta>

Please report bugs or oddities as usual.
Thanks!