Changes between 0.9.7a and 0.9.8 [xx XXX xxxx]
+ *) Add functionality to check the public key of a certificate request
+ against a given private. This is useful to check that a certificate
+ request can be signed by that key (self-signing).
+ [Richard Levitte]
+
+ *) Make it possible to have multiple active certificates with the same
+ subject in the CA index file. This is done only if the keyword
+ 'unique_subject' is set to 'no' in the main CA section (default
+ if 'CA_default') of the configuration file. The value is saved
+ with the database itself in a separate index attribute file,
+ named like the index file with '.attr' appended to the name.
+ [Richard Levitte]
+
*) Generate muti valued AVAs using '+' notation in config files for
req and dirName.
[Steve Henson]