You have been really courageous to build this monster ! :)
But please follow the process to submit patches. We have nice tools that allow us to make life easier, so let's use them !
Regarding the patch as the name let suppose, it's was required to allow compatibility with cgal 4.13. The new version don't require the patch anymore or the build would have failed.
I use graph-tool for work so have built this library more times than anyone would want!!
I'm not very experienced with git or and even less so with arcanist so I'm not sure I did this right but I tried it there anyway.