Disable GCM and AES-NI assembly implementations for WIN64
* cipher/cipher-internal.h (GCM_USE_INTEL_PCLMUL): Do not enable when __WIN64__ defined. * cipher/rijndael-internal.h (USE_AESNI): Ditto.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>