Changes between 0.9.4 and 0.9.5 [xx XXX 1999]
+ *) Add a password callback function PEM_cb() which either prompts for
+ a password if usr_data is NULL or otherwise assumes it is a null
+ terminate password. Allow passwords to be passed on command line
+ environment or config files in a few more utilities.
+ [Steve Henson]
+
+ *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
+ keys. Add some short names for PKCS#8 PBE algorithms and allow them
+ to be specified on the command line for the pkcs8 and pkcs12 utilities.
+ Update documentation.
+ [Steve Henson]
+
*) Support for ASN1 "NULL" type. This could be handled before by using
ASN1_TYPE but there wasn't any function that would try to read a NULL
and produce an error if it couldn't. For compatibility we also have