Add an 'init' function for the initialization of uniupper static matrices in benchmarks
Add an 'init' function for the initialization of uniupper static matrices in benchmarks

wdv4758h/blaze-lib,ironm73/blaze-lib,gnzlbg/blaze-lib,honnibal/blaze-lib,wdv4758h/blaze-lib,lsalamon/blaze-lib,nyotis/blaze-lib,ironm73/blaze-lib,byzhang/blaze,lsalamon/blaze-lib,nyotis/blaze-lib,amaniak/blaze-lib,gnzlbg/blaze-lib,honnibal/blaze-lib,nyotis/blaze-lib,wdv4758h/blaze-lib,honnibal/blaze-lib,ironm73/blaze-lib,byzhang/blaze,lsalamon/blaze-lib,amaniak/blaze-lib,byzhang/blaze,gnzlbg/blaze-lib,amaniak/blaze-lib