Add optional parameter to specify edge weight for Dijkstra shortest path algorithms.  Fixes #366
Add optional parameter to specify edge weight for Dijkstra shortest
path algorithms.  Fixes #366

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extra : convert_revision : svn%3A3ed01bd8-26fb-0310-9e4c-ca1a4053419f/networkx/trunk%401758

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