clean up string comparison optimisation from github #1571
clean up string comparison optimisation from github #1571

scoder/cython,da-woods/cython,scoder/cython,cython/cython,cython/cython,ChristopherHogan/cython,ChristopherHogan/cython,fabianrost84/cython,fabianrost84/cython,fabianrost84/cython,da-woods/cython,fabianrost84/cython,scoder/cython,cython/cython,da-woods/cython,scoder/cython,fabianrost84/cython,cython/cython,da-woods/cython,ChristopherHogan/cython