Update NEWS for 1.7.1 release
Update NEWS for 1.7.1 release

xkahn/gvfs-cmis,xkahn/gvfs-cmis,halfline/gvfs,xkahn/gvfs-cmis,philipl/gvfs,halfline/gvfs,gicmo/gvfs,halfline/gvfs,cpatulea/gvfs,gicmo/gvfs,philipl/gvfs,cpatulea/gvfs,xkahn/gvfs-cmis,philipl/gvfs,gicmo/gvfs,gicmo/gvfs