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, 3 insertions, 4 deletions

diff --git a/doc/examples/dh.cpp b/doc/examples/dh.cpp
index f2a43e7f6..af0c19fec 100644
--- a/doc/examples/dh.cpp
+++ b/doc/examples/dh.cpp
@@ -17,15 +17,14 @@ int main()
    {
    try
       {
-      std::auto_ptr<RandomNumberGenerator> rng(
-         RandomNumberGenerator::make_rng());
+      AutoSeeded_RNG rng;
 
       // Alice creates a DH key and sends (the public part) to Bob
-      DH_PrivateKey private_a(*rng, DL_Group("modp/ietf/1024"));
+      DH_PrivateKey private_a(rng, DL_Group("modp/ietf/1024"));
       DH_PublicKey public_a = private_a; // Bob gets this
 
       // Bob creates a key with a matching group
-      DH_PrivateKey private_b(*rng, public_a.get_domain());
+      DH_PrivateKey private_b(rng, public_a.get_domain());
 
       // Bob sends the key back to Alice
       DH_PublicKey public_b = private_b; // Alice gets this