piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ c8f2a6d2fe17fb1c02116fddaa93ded0ce655af9

Nick Mathewson 7787150521 Merge branch 'maint-0.3.4'		5 lat temu
..
.may_include	ad24ccd472 Minimize includes from sandbox.c	5 lat temu
include.am	bee580ddba Move sandbox code into a new library.	5 lat temu
linux_syscalls.inc	bee580ddba Move sandbox code into a new library.	5 lat temu
sandbox.c	7787150521 Merge branch 'maint-0.3.4'	5 lat temu
sandbox.h	bee580ddba Move sandbox code into a new library.	5 lat temu