[squid-dev] [PATCH] %ssl::<cert_errors logformat code part2:: provide depth information

[Christos Tsantilas]

This is a complement patch for "%ssl::<cert_errors logformat code" patch 
applied to trunk as r14343.

The first implementation of %ssl::<cert_errors formating code does not 
provide information about the certificate the errors belongs. This patch 
prints the chain depth information for error, if exist, using the 
following format for the printed certificate error:
    ERROR at depth=X

The patch also adds the "error_depth_" parameter to cert validator, used 
to pass depth information from cert validator to squid.

This is a Measurement Factory project
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