add TupleGraph default constructor, copy constructor, and assignment operator in preparation for file IO
modify bfs example to support file input
add MPI-based unordered array read
add unordered writes.
add support for loading bintsv4 and saving bintsv4 and tsv
add graph loading support to demo bfs and to pagerank
activate lustre performance optimizations
add TupleGraph loading/saving code
add non-mpi load option; add forgotten barrier
Merge branch 'new-graph-io' into graphlabapi
refactor POSIX loading and saving so it works properly in parallel
for whatever reason OSX/libstdc++ doesn't auto-convert std::stringstream
flags for loading from file in graphlab apps
:( had to use #define instead of C++11 niceness
Merge branch 'new-graph-io' of github.com:uwsampa/grappa into graphlabapi
Release mode compile with 'NDEBUG' to disable Glog stuff
fix max_iteration loop, print time for each iteration
Use += in GRAPPA_TIME_REGION, make Grappa init messages VLOG(2)
pagerank: track total time