EdDSA cleanup, another null resource check
SU3File: Fix getContentOffset(); fail on excess data after sig
SU3File: Infer SigType from private key when signing,
         Change default to RSA 4096
SigUtil: Add conversion methods for Java keys with unknown types
disabling reseed host i2p-netdb.innovatio.no: unresponsive hoster + config issues.

Could be re-enabled when/if problems are fixed.
less casting
raise max concurrent tunnel builds
enhance logging for inproxy rejections
remove xml stats link
unchoke new peer faster
bump -3
checkremotecerts.sh: torify was recently deprecated and now is just an alias pointing to
torsocks, so let's use torsocks directly