The most significant changes made and starting from the 
openssl-0.9.8a-2mdk package is these:

 o The OPENSSLDIR has moved from /usr/lib64/ssl to /etc/pki/tls

The most significant changes made and starting from the 
lib64openssl0.9.8-devel-0.9.8a-10mdk package is these:

 o The static development libraries (*.a) has been packaged in the
  lib64openssl0.9.8-static-devel sub package.
 o /usr/share/man/man3/buffer.3 has been renamed to /usr/share/man/man3/openssl_buffer.3
   to solve a file conflict with rsbac-admin.