chrono-sync2013: Require protobuf locally; add SyncState class to conform to CCL API; test-chrono-chat:Use ChronoSync2013.SyncState for sendInterest method; index: enabled ChronoSync2013
'Merge branch 'zhehaowang-chrono-sync2013'
waf: Update to the latest closure compiler on Google Code.
INSTALL: Note that Java must be installed to build ndn.min.js. Refs #1026.
Merge remote-tracking branch 'upstream/master' into chrono-sync2013