Node-picking fixes: Never warn when a down node is listed in a config option (bug 348); always warn when a node in a config option is unnamed.  Also, when entrynodes is configured, then build the guard list as: (parts of EntryNodes that were guards before), (the rest of EntryNodes), (the rest of the old guards).  This last point ensures that EntryNode users will get the EntryNodes they want with the minimum change to their guard list.


svn:r9574