v2.0
Substitute software fallbacks with lowlevel OpenSSL function calls.
Rewrite most of libica.
Only Linux on System z code.

v2.0.3
  - minor wording fix in icastats tool:
    changed output wording from SHAxxx to SHA-xxx
  - Bugfix for:
    libica abends with illegal instuction when CPACF is disabled.

