allow arbitrary characters for separator and comments the default is # for comments and whitespace for node and edge labels
allow arbitrary characters for separator and comments
the default is # for comments and whitespace for node and edge labels

--HG--
extra : convert_revision : svn%3A3ed01bd8-26fb-0310-9e4c-ca1a4053419f/networkx/trunk%40296

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