SHLIB.EXT -> SHLIB_EXT

{bio}[foss/2015b] Clustal-Omega 1.2.0, argtable 2.13 (OK)

add easyconfig Qt5-5.5.1-intel-2015b-Mesa-11.0.8.eb, add easyconfig xcb-util-0.4.0-intel-2015b-Python-2.7.11.eb, add easyconfig xcb-util-image-0.4.0-intel-2015b-Python-2.7.11.eb, add easyconfig xcb-util-keysyms-0.4.0-intel-2015b-Python-2.7.11.eb, add easyconfig xcb-util-renderutil-0.3.9-intel-2015b-Python-2.7.11.eb, add easyconfig xcb-util-wm-0.4.1-intel-2015b-Python-2.7.11.eb, add easyconfig libXt-1.1.5-intel-2015b-Python-2.7.11.eb, add easyconfig libXi-1.7.4-intel-2015b-Python-2.7.11.eb, add easyconfig libXrender-0.9.9-intel-2015b-Python-2.7.11.eb, add easyconfig libXcursor-1.1.14-intel-2015b-Python-2.7.11.eb, add easyconfig XKeyboardConfig-2.16-intel-2015b-Python-2.7.11.eb, add easyconfig libxkbcommon-0.5.0-intel-2015b-Python-2.7.11.eb, add easyconfig libXinerama-1.1.3-intel-2015b-Python-2.7.11.eb, add easyconfig libXrandr-1.5.0-intel-2015b-Python-2.7.11.eb, add easyconfig libGLU-9.0.0-intel-2015b-Mesa-11.0.8.eb

- added download location
- updated homepage

minor style fixes after #2245