commiting makefiles before merging
Added Max Flow algorithms to snap-core.
Merge remote-tracking branch 'upstream/master'

Conflicts:
  examples/Makefile
Added a folder for exmaple flow program.
Change network reading to randomly generate capacity instead of reading in.
Works better with SNAP datasets.
Add support for reading in long longs from text file. Some ID's in the
SNAP test files have very large node IDs.
add number of iters as parameter
remove need for long long node id
Added FIFO Push Relabel implementation of flow.
change flows example to be multithreaded
Small changes for multithreading flows example.
small changes to examples file
Merge remote-tracking branch 'upstream/master'
Cleaned up unused functions/files for flows. Added a small test. Cleaned
up comments.
modified small_sample testfile for test, changed getrusage flag for
multithreading
Merge branch 'master' of https://github.com/snap-stanford/snap
removed small.txt test file
Merge branch 'master' of https://github.com/snap-stanford/snap
Succesfully ran flows test.
Merge remote branch 'upstream/master'