minor Cipher cleanup - trying to get "minor" usage pass - no luck for now (skip)
probably no need to check for isSupported Cipher from PEMI/O
move Cipher methods into native + revisit and share functionality with Random
- also Random now initializes it's Java Random instances lazily ...
unchecked
X509::Name.to_a compatibility - MRI seems to never return "UNDEF"

- got us test_x509name case(s) all green
unused import
do not force loading of jar-dependencies + possibly respect jars skipped

related: jruby/jruby#1974