adding easyconfigs: Octave-4.2.1-intel-2017a.eb,...

adding easyconfigs: Octave-4.2.1-intel-2017a.eb, arpack-ng-3.5.0-intel-2017a.eb, FLTK-1.3.4-intel-2017a.eb, GLPK-4.61-intel-2017a.eb, GL2PS-1.4.0-intel-2017a.eb, Qhull-2015.2-intel-2017a.eb, qrupdate-1.1.2-intel-2017a.eb, GraphicsMagick-1.3.25-intel-2017a.eb, freeglut-3.0.0-intel-2017a.eb, gperf-3.0.4-intel-2017a.eb, xprop-1.2.2-intel-2017a.eb