RSA: more verbose RSA key handling
RSA: update comments for _extractBER
RSA: remove unit test for time being - it's going to be renamed and
rewritten
Merge branch 'master' of https://github.com/phpseclib/phpseclib
Merge branch 'master' into php5

* master:
  RSA: remove unit test for time being - it's going to be renamed and rewritten
  RSA: update comments for _extractBER
  RSA: more verbose RSA key handling