Add ChainstateManager::m_adjusted_time_callback

This decouples validation.cpp from netaddress.cpp (transitively,
timedata.cpp, and asmap.cpp).

This is important for libbitcoinkernel as:

- There is no reason for the consensus engine to be coupled with
  netaddress, timedata, and asmap
- Users of libbitcoinkernel can now easily supply their own
  std::function that provides the adjusted time.

See the src/Makefile.am changes for some satisfying removals.

src/test/miner_tests.cpp

@@ -10,6 +10,7 @@
 #include <node/miner.h>
 #include <policy/policy.h>
 #include <script/standard.h>
+#include <timedata.h>
 #include <txmempool.h>
 #include <uint256.h>
 #include <util/strencodings.h>

src/test/util/setup_common.cpp

@@ -29,6 +29,7 @@
 #include <shutdown.h>
 #include <streams.h>
 #include <test/util/net.h>
+#include <timedata.h>
 #include <txdb.h>
 #include <util/strencodings.h>
 #include <util/string.h>
@@ -166,6 +167,7 @@ ChainTestingSetup::ChainTestingSetup(const std::string& chainName, const std::ve
 
     const ChainstateManager::Options chainman_opts{
         chainparams,
+        GetAdjustedTime,
     };
     m_node.chainman = std::make_unique<ChainstateManager>(chainman_opts);
     m_node.chainman->m_blockman.m_block_tree_db = std::make_unique<CBlockTreeDB>(m_cache_sizes.block_tree_db, true);

src/test/validation_chainstate_tests.cpp

@@ -3,13 +3,14 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 //
 #include <chainparams.h>
-#include <random.h>
-#include <uint256.h>
 #include <consensus/validation.h>
-#include <sync.h>
+#include <random.h>
 #include <rpc/blockchain.h>
+#include <sync.h>
 #include <test/util/chainstate.h>
 #include <test/util/setup_common.h>
+#include <timedata.h>
+#include <uint256.h>
 #include <validation.h>
 
 #include <vector>
@@ -24,6 +25,7 @@ BOOST_AUTO_TEST_CASE(validation_chainstate_resize_caches)
 {
     const ChainstateManager::Options chainman_opts{
         Params(),
+        GetAdjustedTime,
     };
     ChainstateManager manager{chainman_opts};