Update to 1.50
    
    - New upstream release 1.50
      - fixed a problem where t/handle/external/50_external.t would crash if any of
        the test sites were not contactable
      - now builds on VMS, added README.VMS
      - fixed a few compiler warnings in SSLeay.xs; most of them are just
        signed/unsigned pointer mismatches but there is one that actually fixes
        returning what would be an arbitrary value off the stack from
        get_my_thread_id if it happened to be called in a non-threaded build
      - added SSL_set_tlsext_host_name, SSL_get_servername, SSL_get_servername_type,
        SSL_CTX_set_tlsext_servername_callback for server side Server Name
        Indication (SNI) support
      - fixed a problem with C++ comments preventing builds on AIX and HPUX
      - perdition.org not available for tests, changed to www.open.com.au
      - added SSL_FIPS_mode_set
      - improvements to test suite so it succeeds with and without FIPS mode
        enabled
      - added documentation, warning not to pass UTF-8 data in the content
        argument to post_https