Use a vendor directory for repeatable builds - fixes #816

This is using godep to manage the vendor directory.

vendor/github.com/ncw/swift/compatibility_1_0.go

@@ -0,0 +1,28 @@
+// Go 1.0 compatibility functions
+
+// +build !go1.1
+
+package swift
+
+import (
+	"log"
+	"net/http"
+	"time"
+)
+
+// Cancel the request - doesn't work under < go 1.1
+func cancelRequest(transport http.RoundTripper, req *http.Request) {
+	log.Printf("Tried to cancel a request but couldn't - recompile with go 1.1")
+}
+
+// Reset a timer - Doesn't work properly < go 1.1
+//
+// This is quite hard to do properly under go < 1.1 so we do a crude
+// approximation and hope that everyone upgrades to go 1.1 quickly
+func resetTimer(t *time.Timer, d time.Duration) {
+	t.Stop()
+	// Very likely this doesn't actually work if we are already
+	// selecting on t.C.  However we've stopped the original timer
+	// so won't break transfers but may not time them out :-(
+	*t = *time.NewTimer(d)
+}