while there also change the dependency in the makefile: iri_test should be alone, not as deps of `data'.

During a cross-compilation we can compile the test binaries but not run in the host machine. Furthermore, the exit status of the test isn't really important for the types of check we have, the compilation status is enough. Reported by Nikolay Korotkiy (@sikmir) on Github, fixes issue #8

was forgotten in ff05125eb81e5bbf2cf05b8434d03bce584936e0

It's easy to forgot to update the README after a code change (already happened in the past) and they're easy to discover by reading sandbox.c

gmid ended up printing two slashes between the hostname and the path when logging the request IRI.