Move rng.{cpp,h} from core to rng/ topdir

Add a new class AutoSeeded_RNG that is a RandomNumberGenerator that wraps
up the logic formerly in RandomNumberGenerator::make_rng. make_rng in
fact now just returns a new AutoSeeded_RNG object.

AutoSeeded_RNG is a bit more convenient because

- No need to use auto_ptr
- No need to dereference (same syntax everywhere - it's an underestimated
advantage imo)

Also move the code from timer/timer_base to timer/

1 files changed, 2 insertions, 3 deletions

diff --git a/doc/examples/passhash.cpp b/doc/examples/passhash.cpp
index 78ced1c66..3cba3738f 100644
--- a/doc/examples/passhash.cpp
+++ b/doc/examples/passhash.cpp
@@ -25,11 +25,10 @@ int main(int argc, char* argv[])
 
       if(argc == 2)
          {
-         std::auto_ptr<RandomNumberGenerator> rng(
-            RandomNumberGenerator::make_rng());
+         AutoSeeded_RNG rng;
 
          std::cout << "H('" << argv[1] << "') = "
-                   << password_hash(argv[1], *rng) << '\n';
+                   << password_hash(argv[1], rng) << '\n';
          }
       else
          {