Merge remote branch 'upstream/master'
Fixing GraphReaderTest - gtest apparently really likes pointers to be passed around instead of objects
Build C++ tests using CXXFLAGS instead of CFLAGS
Adding unit tests for clustering, based on results from networx
Cleaning up code
Fixing makefile to rebuild tests if libgraphd.a changed
Merge remote branch 'upstream/master'
Added HAS_BOOST wrappers around powerlaw functions.
Also, replaced EXPECT_LE with EXPECT_NEAR in several gtests
A couple more fixes to compile BOOST-y things with gtest
Protect powerlaw call in graph_stats with #ifdef; clean GraphProperties code
Revised random number generator initialization for speedup.
Added R-MAT and RIG generators to GraphCreator.
Merge remote branch 'upstream/master'
Add a -a option to append stats to an existing file.
Merge remote-tracking branches 'upstream/master' and 'origin'
Merge login.nautilus.nics.utk.edu:/lustre/medusa/proj/tug1649/graph/INDDGO-survey into append
remove random debug line that should have been removed long ago
Fixing type on string
Merge pull request #34 from MattBBaker/master

Append option