piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ 32e888631447c609d4903ffb8a302f8194590fc3

Nick Mathewson c4e5296892 Fix memory-counting error in rephist.c. Bug 18651.		%!s(int64=8) %!d(string=hai) anos
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.dummy	df76da0f3b Add a .dummy file in the changes directory to stop git from removing it	%!s(int64=9) %!d(string=hai) anos
bug18626	db1352703c Remove spurious exit() calls from configure.ac	%!s(int64=8) %!d(string=hai) anos
bug18651	c4e5296892 Fix memory-counting error in rephist.c. Bug 18651.	%!s(int64=8) %!d(string=hai) anos