[jhc] darcs patch: Add some more exotic primitive ops, ffs, ... (and 2 more)

Wed Feb 8 23:08:48 PST 2012 John Meacham <john@repetae.net> * Add some more exotic primitive ops, ffs,clz,ctz,byteswap,popcount,parity. Thu Feb 9 01:06:47 PST 2012 John Meacham <john@repetae.net> * add foreign types, interpret Ptr when creating external C types Thu Feb 9 01:15:27 PST 2012 John Meacham <john@repetae.net> * add md5lazyIO, check for bad paths in createTempFile