R: added empty graphlet file
GL: added Hossein's code without any changes.
GL: reformatted the code, for readability.
GL: added missing Summary.net function.
Renamed bsd.net to graphlets.
GL: export the graphlet function.
GL: add some example code.
GL: change output format, we don't want to store a big clique matrix, the cliques are potentially small.
GL: rewritten to use igraph graphs and vertex lists for cliques. project.net still uses matrices internally, this is temporary.
GL: rewrite project.net without using matrices.
Glet: rewritten the naive algorithm using better data structures.
Glet: added separate graphlet.project function, needs check.
Merge branch 'develop' into 0.7-graphlets
Graphlets: add a function to do thresholding and subgraph generation quickly.
R: added some nasty workarounds for functions that create a lot of graphs, so far decompose.graph uses it. Fixes issue #508.
First version of degeneracy based maximum cliques, adjlists are not optimized yet.

Conflicts:
	src/Makefile.am
Improving maximal cliques, sort adjacency lists, it is slower now, temporarily.
Version with adjlists. Slooooooow. Speeding up now.
Only order adjacency lists for pivoting.
This is fast, but need to check an assumption, see TODO in source.
Fixed memory handling issues.