changed jnx list to stop moving head to the end of the list, and infact lay down the list sequentially as it should be. this will make way for jnx_dlist which will include a tail
added a test to confirm jnxlist is returning values for deletion
first cut of doubly linked list, not looked at removal function yet
reworked deletion mechanism in jnxlist and removed dlist to consolidate into normal list later
removing old files
added tail into list
tidying
Merged Alex's changes and generated new man pages.