Added some more unaries
Added some more unaries


Former-commit-id: 53887507dc1218081f19ce3680186347308367e2
clab/cnn,xunzhang/dynet,danielhers/dynet,clab/dynet,chunyang-wen/dynet,danielhers/dynet,clab/dynet,clab/dynet,shuheik/dynet,clab/cnn,danielhers/dynet,clab/dynet,clab/dynet,shuheik/dynet,shuheik/dynet,shuheik/dynet,shuheik/dynet,clab/dynet,clab/cnn,chunyang-wen/dynet,xunzhang/dynet,danielhers/dynet,clab/dynet,xunzhang/dynet,danielhers/dynet,chunyang-wen/dynet,chunyang-wen/dynet,danielhers/dynet,shuheik/dynet,shuheik/dynet,xunzhang/dynet,danielhers/dynet