added GLU to linker for linux
added GLU to linker for linux

rdmenezes/fibernavigator2,mhough/braingl,mhough/braingl,braingl/braingl,mhough/braingl,rdmenezes/fibernavigator2,TheProjecter/braingl,braingl/braingl,braingl/braingl,TheProjecter/braingl,TheProjecter/braingl