Version 2b

(only two small bug-fixes)

- gf_set with 2 arguments should work now

Version 2 

- the two packages (gf.mac, gf_roots.mac) have been merged

- there are two test files with lots of examples

- gf_set takes now also 2 arguments (no redundant degree)
  and 1 argument (for GF(p))

- new routines for modular roots 

- faster primitive element search

- much faster discrete logarithm

- fast Fibonacci and Lucas sequences

- some bugs have been fixed

- updated manual


