Fuse the fairly common case of zipWith f xs xs
Fuse the fairly common case of zipWith f xs xs

Ignore-this: 6735baca8da29ef5dec0907e75d61ef9

darcs-hash:20091202234418-b2b0a-9ddc2bcd2fe4c826f95bdea2499a6f8bb388936c

rleshchinskiy/vector