[Typo3-debian] typo3-site-installer converts - in dirname to _

[Sven Herrmann]

Hello,

I just tried the installer and it converted the "-" in my directory name
into an "_", but I can't see why you should do that.

I changed the regexp to this:
[^[_\.\/a-zA-Z0-9-]]*
i.e. the "-" at the end instead of at the beginning, then everything works.

Greetings,
Sven