Merge #11309: Minor cleanups for AcceptToMemoryPool

bf64c3cb3 Ignore transactions added to mempool during a reorg for fee estimation purposes. (Alex Morcos)
04f78ab5b Do not reject based on mempool min fee when bypass_limits is set. (Alex Morcos)
fd849e1b0 Change AcceptToMemoryPool function signature (Alex Morcos)

Pull request description:

  First commit just removes default arguments from `AcceptToMemoryPool` and consolidates two arguments, it does not change behavior.

  Second commit finally fixes the fact that we're not meant to reject based on mempool min fee when adding a transaction from a disconnected block during a reorg as mentioned [here](https://github.com/bitcoin/bitcoin/pull/9602#issue-202197849)

  Third commit makes fee estimation ignore transactions added from a disconnected block during a reorg. I think this was another source of fee estimates returning estimates below 1000 sat/kB as in #11303.

Tree-SHA512: 30925ca8b341915bb214f1d2590b36b7931f2e125b7660150e38ae70338f00db5aa7f1608546dddb181446924177eb7cf62ea8bd2583068acc074d6c3f86bc0c

src/validation.h

@@ -301,9 +301,9 @@ void PruneBlockFilesManual(int nManualPruneHeight);
 
 /** (try to) add transaction to memory pool
  * plTxnReplaced will be appended to with all transactions replaced from mempool **/
-bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransactionRef &tx, bool fLimitFree,
-                        bool* pfMissingInputs, std::list<CTransactionRef>* plTxnReplaced = nullptr,
-                        bool fOverrideMempoolLimit=false, const CAmount nAbsurdFee=0);
+bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransactionRef &tx,
+                        bool* pfMissingInputs, std::list<CTransactionRef>* plTxnReplaced,
+                        bool bypass_limits, const CAmount nAbsurdFee);
 
 /** Convert CValidationState to a human-readable message for logging */
 std::string FormatStateMessage(const CValidationState &state);