Face: Fix bug in makeCommandInterest: Need to require WireFormat.
Name: In getSubName, allow a negative value for iStartComponent.
encoding: In WireFormat.decodeInterest, return the signed portion offsets.
Name (internal): In from_ndnb, return the signed portion offsets (for use by decodeInterest).
Data (internal). Need to call new SignedBlob(), not just SignedBlob().
encoding: Fix bug in Tlv0_1WireFormat.decodeSignatureInfoAndValue: Need "new" for new TlvDecoder.
security: In SelfVerifyPoilicyManager, need to require Interest.
Interest: In wireEncode, return a SignedBlob. In wireDecode, set the internal wireEncoding to the SignedBlob.
security: In KeyChain, added verifyInterest.
tests/node: Added test-encode-decode-interest including verify.
ndn.js: Rebuild after adding KeyChain.verifyInterest.
Merge remote-tracking branch 'upstream/master' into chrono-sync2013