lower a bit the multithreading threshold now that we're better at taking advantage of threads. Slightly better results for Inception/Nexus5
lower a bit the multithreading threshold now that we're better at taking advantage of threads. Slightly better results for Inception/Nexus5

efeguney/gemmlowp,dave-andersen/gemmlowp,google/gemmlowp,petewarden/gemmlowp,miaowang14/gemmlowp,google/gemmlowp,dave-andersen/gemmlowp,maciekcc/gemmlowp,miaowang14/gemmlowp,miaowang14/gemmlowp,efeguney/gemmlowp,efeguney/gemmlowp,google/gemmlowp,dave-andersen/gemmlowp,petewarden/gemmlowp,petewarden/gemmlowp,google/gemmlowp,petewarden/gemmlowp,maciekcc/gemmlowp,maciekcc/gemmlowp