Remove a bunch of debugging statements.
Add authorship notes to the header files.
Minor improvements to "mon".
Rename "mpoly_randhom" to "mpoly_randtest_hom".
Update mat_csr doc.
Update todo list.
Remove the padic stuff from "generics.h" as its unused.
Make two changes to remove compiler warnings.
Updates the computation of the diagonal frobenius.

* Removes r, s and replaces it with delta
* Removes the Teichmueller lifts
* Changes the value of M
* Changes the computation of the zeta function (now
  uses a recursion based on Newton-Girard identities)
* Adds test code