Log Message:
Updated p5-IO-Socket-SSL to 2.038.

2.038 2016/09/17
- restrict session ticket callback to Net::SSLeay 1.79+ since version before
  contains bug. Add test for session reuse
- extend SSL fingerprint to pubkey digest, i.e. 'sha1$pub$xxxxxx....'
- fix t/external/ocsp.t to use different server (under my control) to check
  OCSP stapling