Fix assertion when requesting URL containing ':' from serveStaticFiles.

Paths containing a colon were considered to be Windows absolute
paths, causing Path.opBinary!("~") to assert. Now, the request is
just ignored (causing a 404 to be gennerated).
Merge pull request #694 from klickverbot/url-colon-crash

Fix assertion when requesting URL containing ':' from serveStaticFiles.
Fix bogus "no route match" debug message for the match tree based URLRouter.
Recognize "application/javascript" for the script text block deprecation path.
Properly support boolean parameters for vibe.web.web.
Fix vibe.web.web language detection for matches with no country suffix.
Finally we just need to compile it as PIC