Fix hash tests on PowerPC
Fix hash tests on PowerPC

The values of the hashes calculated by the cork_hash_buffer() function
depend on the host's processor architecture.  In particular, the current
implementation depends on the host's endianness.  The hash test cases
have been updated to have the correct expected values on big-endian
systems, like PowerPC.

redjack/libcork,redjack/libcork,ifduyue/libcork,redjack/libcork,redjack/libcork,ifduyue/libcork,rogers0/libcork,dcreager/libcork,dcreager/libcork,tempbottle/libcork,dcreager/libcork,rogers0/libcork,redjack/libcork,redjack/libcork,tempbottle/libcork,ifduyue/libcork,tempbottle/libcork,tempbottle/libcork,rogers0/libcork,rogers0/libcork,ifduyue/libcork,ifduyue/libcork,tempbottle/libcork,tempbottle/libcork,ifduyue/libcork,dcreager/libcork,rogers0/libcork,dcreager/libcork,rogers0/libcork