• Merge pull request #44 from dsteinbrunner/master
  
• Spelling fixes.
  
• Merge pull request #55 from oalders/master
  
• Merge pull request #38 from mbeijen/typo-sting
  
• Merge pull request #43 from dsteinbrunner/master
  
• Spelling corrections
  
• Typo fixes.
  
• correct behavior for https_proxy,
  
  • e.g. don't send plain https:// requests to proxy, but instead
    establish CONNECT tunnel and then send requests inside tunnel. This
    change does together with a change in LWP::Protocol::https. The
    change supports LWP::Protocol::https with the default IO::Socket::SSL
    backend, but also with Net::SSL. Also:
    
    • proxy authorization is supported (http://user:pass@host:port as
      proxy URL, Net::SSL still needs special HTTPSPROXY* ENV
      variables, as before)
      
    • CONNECT request does not need to be the first request inside the
      tunnel (not with Net::SSL)
      
    • conn_cache is read and written inside request(), instead of
      writing in request() and reading in _new_socket(). If a https
      tunnel is established the cache_key no longer depends only on
      proxy host,port but also on the tunnel endpoint
      
    • CONNECT is a proxy request and must always use Proxy-Authorization,
      not Authorization header
      
• fix: auth-header of Digest auth did not conform to
  
• RFC 2617 when WWW-Authenticate has 'qop' parameter.
  
• SSL libs might trigger ENOTTY on read
  
• Small typo.