Prefer internet paths that are not site-local.
minor fixup/touchup for sample app execution
remove dynamic outer packet parse dispatch.

Since there can be only two types of outer packet (open and line),
there's no need for the dynamic dispatch, and it was causing problems
anyway.
Switch to PKCS#1v2.1 when encoding public key

Switch to PKCS#1v2.1 when encoding public key, but support either
PKCS#1v2.1 or SPKI/PKCS#8 when decoding.
ditch PEM for RSA key storage

Just use the Telehash standard encoding we use everywhere else, encoded
with Base64.
fix problem with seeds containing unsupported cipher sets.
fix channel id parsing
adding some launch-time seed debugging to BasicNode sample.