Bumped Standards-Version to 3.9.1

Ignore-this: e505e098e5f25f99a91f6fe0e04637c5

darcs-hash:20100813090626-56b4d-ef31e570ca269813e2d03eb5b0c27b1df28fdedd
Raised version and updated changelog

Ignore-this: 56b6e12475a0f12521cbbf9a61e17f61

darcs-hash:20100813091049-56b4d-f222b7344fa876550cf6965b17f4da8799b618fe