PETSc 3.5.1 with intel 2014b

Plus dependencies
Needs https://github.com/hpcugent/easybuild-easyblocks/pull/446
and https://github.com/hpcugent/easybuild-framework/pull/987


Short version: there are 8 launchpad download url's, and 4 deviate from the default (the first line above): viper, FIAT, python-meep,  DOLFIN