[libc,kernel] Rewrite ptostr for speed, add thousands separator to printk #2016
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Rewrites
ptostrprecision timer routine to be much faster, using __divmod routine.Same for kernel %k precision timing output: rewritten for speed to using __divmod.
Adds
%ld,%luthousands grouping to kernel printk (like recently added libc printf).Enhances some kernel output to use thousands grouping commas for large numbers.