[PATCH] Server certificate error to user

Hi all,
  This patch adds an interface to allow Squid error responses to contain
detailed information about SSL certificate verification failure. For
example, the error message may contain the following text:

"Server Certificate Verification Failed: Certificate Common Name
(www.lufthansa.com) does not match the host name you are connecting to
(www.lufthansa.de)."

Supplying SSL error details is useful to end-users if the user can
bypass errors or communicate with proxy operators to update Squid's
whitelists.

For more informations please look inside patch documentation.

This is a Measurement Factory project.

Regards,
    Christos