Link against xcb explicitly, seems like sometimes that dep is missing
Add support for VP4 blobs, including the crazy patching system and a way
to generate symlinks. This may need more fleshing out as I get
confirmation that the data is correct for various chipsets (or, more
likely, extra/different patches that need to be applied for them).
Switch to using regexes to find the starts of the various blobs, this
speeds things up considerably since (a) we only scan over each file once
and (b) the bulk of the scanning is done in the C extension