Log Message:
p5-IO-Socket-SSL: update to 2.052.

2.052 2017/10/22
- disable NPN support if LibreSSL>=2.6.1 is detected since they've replaced the
  functions with dummies instead of removing NPN completly or setting
  OPENSSL_NO_NEXTPROTONEG
- t/01loadmodule.t shows more output helpful in debugging problems
- update fingerprints for extenal tests
- update documentation to make behavior of syswrite more clear