Use UMFPACK in omfd
Implement fe2quad_3d_lobatto()
Drop zeros from the matrix A
Introduce quad_gauss and quad_lobatto constants
Introducing spectral variable, improve info
Use fe2quad_3d_lobatto for spectral elements
Optimize loops
Calculate Venq only once
Add more info
Add a dummy UMFPACK
Turn umfpack on or off
Merge pull request #37 from certik/ofmd_umf

OFMD with UMFPACK