add the -O1/-O2 swith for the gcc4.9 or later versions.
add the -O1/-O2 swith for the gcc4.9 or later versions.

cherryc/dynet,Abasyoni/dynet,Abasyoni/dynet,kamigaito/cnn,mitchellstern/dynet,kamigaito/cnn,Abasyoni/dynet,cherryc/dynet,mitchellstern/dynet,Peilun-Li/dynet,Peilun-Li/dynet,Peilun-Li/dynet,cherryc/dynet