win: Compile getopt as C++ and wrap in crashpad namespace

third_party/getopt/getopt.cc

 /*
 Copyright (C) 1997 Gregory Pietsch
 
 [These files] are hereby placed in the public domain without restrictions. Just
 give the author credit, don't claim you wrote it or prevent anyone else from
 using it.
 */
 
 /****************************************************************************
 
@@ skipping 81 matching lines @@
 ****************************************************************************/
 
 /* include files */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #ifndef GETOPT_H
 #include "getopt.h"
 #endif
 
+namespace crashpad {
+
 /* macros */
 
 /* types */
 typedef enum GETOPT_ORDERING_T
 {
   PERMUTE,
   RETURN_IN_ORDER,
   REQUIRE_ORDER
 } GETOPT_ORDERING_T;
 
@@ skipping 296 matching lines @@
   return getopt_internal (argc, argv, (char*)shortopts, (GETOPT_LONG_OPTION_T*)longopts, longind, 0);
 }
 
 int
 getopt_long_only (int argc, char **argv, const char *shortopts,
                   const GETOPT_LONG_OPTION_T * longopts, int *longind)
 {
   return getopt_internal (argc, argv, (char*)shortopts, (GETOPT_LONG_OPTION_T*)longopts, longind, 1);
 }
 
+}  // namespace crashpad
+
 /* end of file GETOPT.C */