model: replacing direct usage of fib::FaceMetric variables by inline methods
model: Finalizing implementation of FaceMetric::Status tracing

Adding test case (ndnSIM-fib-entry), which can be used as an example how
to set up tracing.
utils: draft implementation for queue drop tracer
model: Mark face YELLOW when PIT entry times out in ndn::fw::GreenYellowRed strategy
Merge feature branch 'feature-trace-value-for-fib-entry'
helper: New experimental CalculateAllPossibleRoutes method in ndn::GlobalRoutingHelper

Implementation is not time-efficient and it should not be used for very
large topologies.
helper: Fixing unused variable warning
tools: fix compilation warning about an unused return value
Issue #25   Replacing usage of TCP RTT estimator with a customized version

In the current commit, RTT estimator does not implement Karn's algorithm
and takes into account all RTT samples, including ambiguous samples from
retransmitted Interests.
Issue #25: fix the logic in SentSeq and AckSeq to capture retx and support random seq
docs: Updating documentation

+ Adding installation instructions for Fedora 16+
+ Changing manual boost installation instructions to boost-1.53
Issue #27    Fix hop counting bug when NACKs are enabled
Refs #25   Merge branch 'issue-25-rtt-estimation'
Refs #27   Merge branch 'issue-27-hop-count-fix'
src: Creating file to track current version of ndnSIM (in addition to git tags)

+ AUTHORS file
examples: Adding new example to illustrate use of L2Tracer to trace aggregate packet drop rate on nodes
docs: Documenting new L2Tracer with a scenario and graph building example
Merge feature branch 'feature-l2-tracer'
src: Update AUTHORS file
model+cs: Now it is possible to get pointer to ContentStore from cs::Entry

In some cases it is desirable to know which ContentStore (=on which
Node) a particular cs::Entry belongs to.  Now it is possible to
accomplish this task using cs::Entry::GetContentStore method.