piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ 42b3caa6ad70106e7bca90bceca378b91045f545

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