message: refactor: remove use of boost::algorithm::replace_first
diff: #include <version.h>
  #include <boost/algorithm/string/classification.hpp>
  -#include <boost/algorithm/string/replace.hpp>
  #include <boost/algorithm/string/split.hpp>
  #include <algorithm>
  @@ -40,8 +39,9 @@ CScript ParseScript(const std::string& s)
  continue;
  mapOpNames[strName] = static_cast<opcodetype>(op);
  // Convenience: OP_ADD and just ADD are both recognized:
  - boost::algorithm::replace_first(strName, "OP_", "");
  - mapOpNames[strName] = static_cast<opcodetype>(op);
  + if (strName.compare(0, 3, "OP_") == 0) { // strName starts with "OP_"
  + mapOpNames[strName.substr(3)] = static_cast<opcodetype>(op);
  + }
  }
  }
  