fixed a bug in relative if root has "/" postfix.
fixed a bug in relative if root has "/" postfix.

Only remove a single "/" from root.
Elsewise it fails at:
root = "http://"
path = "www.example.com"
-> "http:/www.example.com" :(
correct is "http://www.example.com" :)

azakhary/source-map,stealjs/source-map,ejpbruel/source-map,meteor/source-map,modulexcite/source-map,bitovi/source-map,garysye/source-map,bitovi/source-map,stealjs/source-map,modulexcite/source-map,ejpbruel/source-map,garysye/source-map,spark/source-map,spark/source-map,webcoding/source-map,azakhary/source-map,webcoding/source-map