RT2867: des_ede3_cfb1 ignored "size in bits" flag

Code by Steve Henson. Backport to 1.0.2 from commit fe2d1491



Fixes #2346

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3364)