add easyconfig scikit-image-0.12.3-intel-2016b-Python-2.7.12.eb, add...

add easyconfig scikit-image-0.12.3-intel-2016b-Python-2.7.12.eb, add easyconfig Qhull-2015.2-intel-2016b.eb, add easyconfig matplotlib-1.5.3-intel-2016b-Python-2.7.12.eb, add easyconfig libpng-1.6.26-intel-2016b.eb, add easyconfig freetype-2.7-intel-2016b.eb