Implementation of VerusHash CPU-friendly hash algorithm, parameters to enable it, miner, and all changes required to support it on new asset chains

src/init.cpp

@@ -9,6 +9,7 @@
 
 #include "init.h"
 #include "crypto/common.h"
+#include "primitives/block.h"
 #include "addrman.h"
 #include "amount.h"
 #ifdef ENABLE_MINING
@@ -1095,6 +1096,11 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     ECC_Start();
     globalVerifyHandle.reset(new ECCVerifyHandle());
 
+    // set the hash algorithm to use for this chain
+    extern uint32_t ASSETCHAINS_ALGO, ASSETCHAINS_VERUSHASH;
+    if (ASSETCHAINS_ALGO == ASSETCHAINS_VERUSHASH)
+        CBlockHeader::SetVerusHash();
+
     // Sanity check
     if (!InitSanityCheck())
         return InitError(_("Initialization sanity check failed. Komodo is shutting down."));