Add crashpad_database_util and its man page

handler/mac/main.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 59 matching lines @@
   };
 
   struct {
     std::map<std::string, std::string> annotations;
     std::string url;
     const char* database;
     int handshake_fd;
   } options = {};
   options.handshake_fd = -1;
 
-  const struct option long_options[] = {
+  const option long_options[] = {
       {"annotation", required_argument, nullptr, kOptionAnnotation},
       {"database", required_argument, nullptr, kOptionDatabase},
       {"handshake-fd", required_argument, nullptr, kOptionHandshakeFD},
       {"url", required_argument, nullptr, kOptionURL},
       {"help", no_argument, nullptr, kOptionHelp},
       {"version", no_argument, nullptr, kOptionVersion},
       {nullptr, 0, nullptr, 0},
   };
 
   int opt;
@@ skipping 91 matching lines @@
 
   return EXIT_SUCCESS;
 }
 
 }  // namespace
 }  // namespace crashpad
 
 int main(int argc, char* argv[]) {
   return crashpad::HandlerMain(argc, argv);
 }