Add "chain" to getmininginfo, improve help in getblockchaininfo

src/rpcblockchain.cpp

@@ -438,7 +438,7 @@ Value getblockchaininfo(const Array& params, bool fHelp)
             "Returns an object containing various state info regarding block chain processing.\n"
             "\nResult:\n"
             "{\n"
-            "  \"chain\": \"xxxx\",        (string) current chain (main, testnet3, regtest)\n"
+            "  \"chain\": \"xxxx\",        (string) current network name as defined in BIP70 (main, test, regtest)\n"
             "  \"blocks\": xxxxxx,         (numeric) the current number of blocks processed in the server\n"
             "  \"bestblockhash\": \"...\", (string) the hash of the currently best block\n"
             "  \"difficulty\": xxxxxx,     (numeric) the current difficulty\n"

src/rpcmining.cpp

@@ -253,6 +253,7 @@ Value getmininginfo(const Array& params, bool fHelp)
             "  \"hashespersec\": n          (numeric) The hashes per second of the generation, or 0 if no generation.\n"
             "  \"pooledtx\": n              (numeric) The size of the mem pool\n"
             "  \"testnet\": true|false      (boolean) If using testnet or not\n"
+            "  \"chain\": \"xxxx\",         (string) current network name as defined in BIP70 (main, test, regtest)\n"
             "}\n"
             "\nExamples:\n"
             + HelpExampleCli("getmininginfo", "")
@@ -269,6 +270,7 @@ Value getmininginfo(const Array& params, bool fHelp)
     obj.push_back(Pair("networkhashps",    getnetworkhashps(params, false)));
     obj.push_back(Pair("pooledtx",         (uint64_t)mempool.size()));
     obj.push_back(Pair("testnet",          Params().NetworkID() == CChainParams::TESTNET));
+    obj.push_back(Pair("chain",            Params().NetworkIDString()));
 #ifdef ENABLE_WALLET
     obj.push_back(Pair("generate",         getgenerate(params, false)));
     obj.push_back(Pair("hashespersec",     gethashespersec(params, false)));