Merge pull request #6 from egaburov/Titan2D-demo

Titan2 d demo
JB: Looks good to me!
GLU files to remove the need of linking in the library
Merge pull request #7 from egaburov/Titan2D-demo

backward compatibility fix for IO: enable support for old yet incorrect ...
Merge pull request #10 from jbedorf/Titan2D-demo

GLU files to remove the need of linking in the library
Allow enabling of IceT
Merge pull request #11 from egaburov/Titan2D-demo

change from MPI_COMM_WORLD to custom mpiCommWorld. needs further testing...
Merge pull request #2 from treecode/Titan2D-demo

Titan2 d demo