* More aggressive I2PTunnel content encoding munging to work around some
rare HTTP behavior (ignoring q values on Accept-encoding, using gzip
even when only identity is specified, etc). I2PTunnelHTTPServer now
sends "Accept-encoding: \r\n" plus "X-Accept-encoding: x-i2p-gzip\r\n",
and I2PTunnelHTTPServer handles x-i2p-gzip in either the Accept-encoding
or X-Accept-encoding headers. Eepsite operators who do not know to
check for X-Accept-encoding will simply use the identity encoding.
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