v0.7.0

clogger 0.7.0 - portability improvements, cleanups

Broken/crazy systems without CLOCK_MONOTONIC (in varying
degrees) and/or clock_gettime() should be supported by
using gettimeofday().  Thanks to Lawrence Pit for reporting
and helping us test.

The Clogger::ToPath proxy class is gone, Clogger itself can
proxy to_path/close calls correctly to the response body.

$time_utc with a default strftime-format is now supported, and
time formats can now be arbitrarily long in the C extension.