Changed to the old setuptools so that I can build eggs...
export methods order(), invariants() and gens()

+ disable precomputations for large moduli
remove assert debug checks
add dummy logvalue computation for large moduli
Correct mathematical error on zeta_order
add simple tests
Merge branch 'master' into pascal

Conflicts:
	dirichlet_conrey.pyx
Change 3 to 5; change precomputation to always on

3 is now used instead of 5 for the generator for powers of 2. This is
the "correct" choice, since it makes certain things much easier.
(Basically, this is because 5 is 1 mod 4, so all powers of 5 are also 1
mod 4.)

This commit also sets precomputation to always happen again. Being able
to do things without precomputation is very important, and we want to
support it, but right now some important things are still broken if we
don't precompute, so it is always turned on.
Change author email.

I've changed the author email in the egg setup stuff that Fredrik wrote
to actually be by real email. (I don't know anything about this egg
stuff, though.)