Code for PIR-based onion service lookups (client and server)

Ian Goldberg 06e560897d Ensure the stderr integration works 5 rokov pred
Makefile 06e560897d Ensure the stderr integration works 5 rokov pred
pirserver.cc 746f980c29 Start the pirserver code 5 rokov pred
pirserver.h 746f980c29 Start the pirserver code 5 rokov pred
protocol 746f980c29 Start the pirserver code 5 rokov pred
toyserver.cc 06e560897d Ensure the stderr integration works 5 rokov pred