scripted-diff: Rename overloaded int GetArg to GetIntArg

Improve readability of code, simplify future scripted diff cleanup PRs, and be
more consistent with naming for GetBoolArg.

This will also be useful for replacing runtime settings type checking
with compile time checking.

-BEGIN VERIFY SCRIPT-
git grep -l GetArg | xargs sed -i 's/GetArg(\([^)]*\( [0-9]\+\|-1\|port\|BaseParams().RPCPort()\|Params().GetDefaultPort()\|_TIMEOUT\|Height\|_WORKQUEUE\|_THREADS\|_CONNECTIONS\|LIMIT\|SigOp\|Bytes\|_VERSION\|_AGE\|_CHECKS\|Checks() ? 1 : 0\|_BANTIME\|Cache\|BLOCKS\|LEVEL\|Weight\|Version\|BUFFER\|TARGET\|WEIGHT\|TXN\|TRANSACTIONS\|ADJUSTMENT\|i64\|Size\|nDefault\|_EXPIRY\|HEIGHT\|SIZE\|SNDHWM\|_TIME_MS\)\))/GetIntArg(\1)/g'
-END VERIFY SCRIPT-

Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>

src/util/system.cpp

@@ -591,7 +591,7 @@ std::string ArgsManager::GetArg(const std::string& strArg, const std::string& st
     return value.isNull() ? strDefault : value.isFalse() ? "0" : value.isTrue() ? "1" : value.get_str();
 }
 
-int64_t ArgsManager::GetArg(const std::string& strArg, int64_t nDefault) const
+int64_t ArgsManager::GetIntArg(const std::string& strArg, int64_t nDefault) const
 {
     const util::SettingsValue value = GetSetting(strArg);
     return value.isNull() ? nDefault : value.isFalse() ? 0 : value.isTrue() ? 1 : value.isNum() ? value.get_int64() : atoi64(value.get_str());

src/util/system.h

@@ -327,7 +327,7 @@ protected:
      * @param nDefault (e.g. 1)
      * @return command-line argument (0 if invalid number) or default value
      */
-    int64_t GetArg(const std::string& strArg, int64_t nDefault) const;
+    int64_t GetIntArg(const std::string& strArg, int64_t nDefault) const;
 
     /**
      * Return boolean argument or default value