Changes between 0.9.4 and 0.9.5 [xx XXX 2000]
+ *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
+ Some CAs (e.g. Verisign) distribute certificates in this form.
+ [Steve Henson]
+
+ *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
+ list to exclude them. This means that no special compilation option
+ is needed to use anonymous DH: it just needs to be included in the
+ cipher list.
+ [Steve Henson]
+
+ *) Change the EVP_MD_CTX_type macro so its meaning consistent with
+ EVP_MD_type. The old functionality is available in a new macro called
+ EVP_MD_md(). Change code that uses it and update docs.
+ [Steve Henson]
+
*) ..._ctrl functions now have corresponding ..._callback_ctrl functions
where the 'void *' argument is replaced by a function pointer argument.
Previously 'void *' was abused to point to functions, which works on