Use lil sparse matrix format when converting from scipy sparse matrix to networkx graphs.
Use lil sparse matrix format when converting from scipy sparse matrix
to networkx graphs.

--HG--
extra : convert_revision : svn%3A3ed01bd8-26fb-0310-9e4c-ca1a4053419f/networkx/trunk%40780

kai5263499/networkx,michaelpacer/networkx,nathania/networkx,jakevdp/networkx,Sixshaman/networkx,ghdk/networkx,kernc/networkx,jcurbelo/networkx,ghdk/networkx,chrisnatali/networkx,aureooms/networkx,sharifulgeo/networkx,ionanrozenfeld/networkx,RMKD/networkx,debsankha/networkx,bzero/networkx,dhimmel/networkx,goulu/networkx,tmilicic/networkx,farhaanbukhsh/networkx,harlowja/networkx,SanketDG/networkx,dhimmel/networkx,farhaanbukhsh/networkx,harlowja/networkx,jfinkels/networkx,chrisnatali/networkx,RMKD/networkx,bzero/networkx,jni/networkx,beni55/networkx,OrkoHunter/networkx,jni/networkx,blublud/networkx,cmtm/networkx,debsankha/networkx,nathania/networkx,ltiao/networkx,kernc/networkx,aureooms/networkx,debsankha/networkx,sharifulgeo/networkx,kernc/networkx,wasade/networkx,blublud/networkx,yashu-seth/networkx,jtorrents/networkx,andnovar/networkx,ionanrozenfeld/networkx,ghdk/networkx,bzero/networkx,jni/networkx,kai5263499/networkx,aureooms/networkx,farhaanbukhsh/networkx,dmoliveira/networkx,harlowja/networkx,dmoliveira/networkx,jakevdp/networkx,NvanAdrichem/networkx,dhimmel/networkx,sharifulgeo/networkx,nathania/networkx,chrisnatali/networkx,jtorrents/networkx,blublud/networkx,ionanrozenfeld/networkx,dmoliveira/networkx,RMKD/networkx,kai5263499/networkx,JamesClough/networkx,jakevdp/networkx