t/02cgr.t - Add more tests
t/03rgr.t - Add more tests
t/04print_error.t - change to comments only
t/05gen_check.t - Use Math::GMPz-0.39 or later
t/05gen_check_alt.t - Use Math-GMPz-0.39 or later
t/07cgr_custom.t - New file
t/06gr.t - New file
MANIFEST - Add new files
GenRandom.xs - Add more functions
GenRandom.pm - Add and document new functions