only build matcaffe as part of 'make everything' if MATLAB_DIR is set
only build matcaffe as part of 'make everything' if MATLAB_DIR is set

gogartom/caffe-textmaps,tackgeun/caffe,longjon/caffe,tackgeun/caffe,CZCV/s-dilation-caffe,gnina/gnina,gnina/gnina,gnina/gnina,gnina/gnina,CZCV/s-dilation-caffe,CZCV/s-dilation-caffe,longjon/caffe,longjon/caffe,wangg12/caffe,gnina/gnina,tackgeun/caffe,tackgeun/caffe,wangg12/caffe,wangg12/caffe,gogartom/caffe-textmaps,longjon/caffe,gogartom/caffe-textmaps,CZCV/s-dilation-caffe,gnina/gnina,gogartom/caffe-textmaps,wangg12/caffe