alter des.h to be friendly with openssl/des.h (you can include both in the
same file)
make libkrb to depend on libdes. bump major.
massage various portioin of heimdal to be friendly with openssl 0.9.7b.
libcrypto shared major when we moved from OpenSSL 0.9.5 to 0.9.6.
Add note to libcrypto shlib_version file to remind people to also
update libdes shlib_version.