Created the name segment search capabilities

made a nameSegmentIndexEntry
Made NameSegIndex a map from string to nameSegmentIndexEntry to integer
Updated the IndexNameSegment to insert name segment into that index
Updated the search to check whether the query is in the name segment index
"Either the exact name segment match or longest prefix match" (for now, exact name segment)
Made the HID used to seed the crawler a local seed in interfaces
Now crawler starts after the contentservices have started (in CCFS.go)
Renamed ifaces.go to interfaces.go