switching to temporarily use glog library

go/operation/delete_content.go

@@ -1,14 +1,14 @@
 package operation
 
 import (
-	"log"
+	"code.google.com/p/weed-fs/go/glog"
 	"net/http"
 )
 
 func Delete(url string) error {
 	req, err := http.NewRequest("DELETE", url, nil)
 	if err != nil {
-		log.Println("failing to delete", url)
+		glog.V(0).Infoln("failing to delete", url)
 		return err
 	}
 	_, err = http.DefaultClient.Do(req)