* rsa_md5.c, rsa_sha1.c: Deleted files, contents spread over

several files for signing and verification.
* rsa-sign.c, rsa-sha1-verify.c, rsa-sha1-sign.c,
rsa-md5-verify.c, rsa-md5-sign.c:  New files.

Rev: src/nettle/rsa_md5.c:1.8(DEAD)
Rev: src/nettle/rsa_sha1.c:1.8(DEAD)