piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ 97b15a1d7c51764888d2172711e3f3a71fb01916

Nick Mathewson 2cf033f238 Extract simple integer math into its own module		6 anni fa
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.may_include	2cf033f238 Extract simple integer math into its own module	6 anni fa
addsub.c	2cf033f238 Extract simple integer math into its own module	6 anni fa
addsub.h	2cf033f238 Extract simple integer math into its own module	6 anni fa
bits.c	2cf033f238 Extract simple integer math into its own module	6 anni fa
bits.h	2cf033f238 Extract simple integer math into its own module	6 anni fa
cmp.h	2cf033f238 Extract simple integer math into its own module	6 anni fa
include.am	2cf033f238 Extract simple integer math into its own module	6 anni fa
muldiv.c	2cf033f238 Extract simple integer math into its own module	6 anni fa
muldiv.h	2cf033f238 Extract simple integer math into its own module	6 anni fa