Enable AMD64 CAST5 implementation on WIN64
* cipher/cast5-amd64.S: Enable when HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS defined. (RIP): Remove. (GET_EXTERN_POINTER): Use 'leaq' version on WIN64. (ELF): New macro to mask lines with ELF specific commands. * cipher/cast5.c (USE_AMD64_ASM): Enable when HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS defined. [HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS] (call_sysv_fn): New. (do_encrypt_block, do_decrypt_block) [HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS]: Call assembly function through 'call_sysv_fn'. (cast5_amd64_ctr_enc, cast5_amd64_cbc_dec) (cast5_amd64_cfb_dec): New wrapper functions for bulk assembly functions.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>