In an old commit the backslash of was missing in the rule for creating the
i386-avx-mpx-avx512-pku.dat file. No need to regenerate the files, this
was done by another commit from Yao.
2017-09-20 Walfred Tedeschi <walfred.tedeschi@intel.com>
* features/Makefile (i386-avx-mpx-avx512-pku.dat): Add backslash.
