Adding some dependencies for happstack.

These packages are some of the dependencies for happstack.  I'm adding them to
somewhat ease the work on [haskell-happstack].

    base16-bytestring
    haskell-src-meta
    syb-with-class
    th-lift
    th-orphans
    time-compat

Closes #96

Signed-off-by: Magnus Therning <magnus@therning.org>