Properties.hs: simplify Arbitrary instance for BoolString
Properties.hs: simplify Arbitrary instance for BoolString

Just choose between "1" and "0" directly.

darcs-hash:20080305153631-928c4-12c3487ffbb09e1cbcc242ef1431668ec3b741ff.gz

sol/libmpd-haskell,beni55/libmpd-haskell