GitLab

Added subset; modified Array's interaction with Function; added new functionality to XdmfInformation subarrays; adjusted documentation to make more uniform

made changes for preparations to push to master; still need to finish documentation changes and line length changes

Using statements have been added to XdmfSharedPtr.hpp. All used of
boost::shared_ptr and boost::shared_dynamic_cast have been replaced
by shared_ptr and shared_dynamic_cast. Slight modification to XdmfCore.i
to get swig wrapping working again.

Hopefully this will become a standard style for Xdmf development.
All spaces - 80 character line wrapping.

ENH: Change some method names in XdmfArray to be clearer and less verbose.  Modify files for documentation clarity.  Modify some minor things to prevent -Wall warnings in gcc.  Add python install rules and rpathing.

ENH: Make XdmfGridCollection inherit from XdmfGrid and XdmfDomain, since it is really a unity of the two classes.  Modify some details in ItemFactory / Reader.

ENH: Move XdmfCore into its own subdirectory.  Move XdmfCore specific tests into core subdirectory and modify
swig wrapping to create two separate libraries (Xdmf and XdmfCore).

ENH: Split Xdmf into XdmfCore and Xdmf libraries in anticipation of NetDMF development.  Create a couple abstract base classes
in order to support generic reading from disk.