Add a geometry field to p4est_wrap
Revert "Add a geometry field to p4est_wrap"

This reverts commit ae342ebf5aa85264620214bb092633dc38812c51.
Maybe the geometry should not be forced to live in the wrapper.
Make p4est_wrap_new_conn extern
clean compile with CC=mpicxx
Indent p4est_wrap
Merge branch 'wrap' into develop