Merge libgcrypt branch.

Merge libgcrypt branch.

2009-11-17  Robert Millan  <rmh.grub@aybabtu.com>

        * import_gcry.py: New file (written by Vladimir with minor
        adjustments).
        * autogen.sh: Use import_gcry.py to auto-generate GRUB-ified
        ciphers.
        * INSTALL: Document that Python is required for bootstrap.

2009-11-17  Robert Millan  <rmh.grub@aybabtu.com>

        Import ciphers from libgcrypt 1.4.4.

         * lib/libgcrypt/cipher/ChangeLog
         * lib/libgcrypt/cipher/ac.c
         * lib/libgcrypt/cipher/arcfour.c
         * lib/libgcrypt/cipher/bithelp.h
         * lib/libgcrypt/cipher/blowfish.c
         * lib/libgcrypt/cipher/camellia-glue.c
         * lib/libgcrypt/cipher/camellia.c
         * lib/libgcrypt/cipher/camellia.h
         * lib/libgcrypt/cipher/cast5.c
         * lib/libgcrypt/cipher/cipher.c
         * lib/libgcrypt/cipher/crc.c
         * lib/libgcrypt/cipher/des.c
         * lib/libgcrypt/cipher/dsa.c
         * lib/libgcrypt/cipher/ecc.c
         * lib/libgcrypt/cipher/elgamal.c
         * lib/libgcrypt/cipher/hash-common.c
         * lib/libgcrypt/cipher/hash-common.h
         * lib/libgcrypt/cipher/hmac-tests.c
         * lib/libgcrypt/cipher/md.c
         * lib/libgcrypt/cipher/md4.c
         * lib/libgcrypt/cipher/md5.c
         * lib/libgcrypt/cipher/primegen.c
         * lib/libgcrypt/cipher/pubkey.c
         * lib/libgcrypt/cipher/rfc2268.c
         * lib/libgcrypt/cipher/rijndael-tables.h
         * lib/libgcrypt/cipher/rijndael.c
         * lib/libgcrypt/cipher/rmd.h
         * lib/libgcrypt/cipher/rmd160.c
         * lib/libgcrypt/cipher/rsa.c
         * lib/libgcrypt/cipher/seed.c
         * lib/libgcrypt/cipher/serpent.c
         * lib/libgcrypt/cipher/sha1.c
         * lib/libgcrypt/cipher/sha256.c
         * lib/libgcrypt/cipher/sha512.c
         * lib/libgcrypt/cipher/tiger.c
         * lib/libgcrypt/cipher/twofish.c
         * lib/libgcrypt/cipher/whirlpool.c