Added *.pyc to gitignore.
Fixing windows build error on undefined symbols.
Fixing support for supplying which timesteps to export in matlabexport.
Merge branch 'master' of https://github.com/Micket/oofem
XFEM: Fixed problem with DofManDofIdMask in 2D XFEM elements. Also
corrected initialization in the Gnuplot export module.