Allow grid functions to have undefined dualSpace in solver.
Working on weak_form_hmat_assembly_helper.cpp
Working on hmat_global_assembler
Merged master changes into hmat branch
Started Hmat Options class
hmat_global_assembler.cpp compiles now.
Blockcluster generation compiles
Committed missing files.
Added new option structures for hmat
Updated file formattings
Updated Swig to fix C++11 compatibility
Updated formatting
Data Accessor class compiles
Working on HMatrix Compression
HMatrix matvec is working.
Updated formattings
ACA Compressor compiles but needs more work
Working on ACA implementation