INVALID_HANDLE_VALUE has the 32-bit value even in 64-bit builds

[nmisch]

Program:

use Win32API::File ();
close STDIN;
printf("INVALID_HANDLE_VALUE = 0x%x\nFdGetOsFHandle = 0x%x\n",
       Win32API::File::INVALID_HANDLE_VALUE,
       Win32API::File::FdGetOsFHandle(0));

I expected the two handle values to be equal, since the FdGetOsFHandle pod
documentation says, on failure, "C<$hNativeHandle> is set to
C<INVALID_HANDLE_VALUE>". In strawberry-perl-5.32.1.1-64bit, the handles
are unequal. Program output:

INVALID_HANDLE_VALUE = 0xffffffff
FdGetOsFHandle = 0xffffffffffffffff

Equivalently, one can see this in a TAP test by adding t/closed.t with the
following content:

use Test::More;
use Win32API::File ();
plan tests => 1;
close STDIN;
is(Win32API::File::INVALID_HANDLE_VALUE, Win32API::File::FdGetOsFHandle(0));

I get this behavior with the preinstalled module and also when building
https://github.com/chorny/Win32API-File in the
strawberry-perl-5.32.1.1-64bit environment.
Win32API::File::INVALID_HANDLE_VALUE is the value that C-level
INVALID_HANDLE_VALUE would have in a 32-bit binary, despite this being a
64-bit Perl.

The distribution has code, disabled by default, for regenerating the constants
(search for Myconst2perl and NO_REBUILD). Enabling that code yields one
error and a flurry of warnings:

...
const2perl.h:119:19: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
  newconst( sName, "%"IVdf, iValue, newSViv(iValue) );
                   ^
const2perl.h:122:19: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
  newconst( sName, "%"IVdf, iValue, newSViv(iValue) );
                   ^
const2perl.h:133:19: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
  newconst( sName, "0x%"UVxf, (UV)(pValue), mpSvNew );
                   ^
const2perl.h:99:5: error: extra qualification '_const2perl::' on member '_const2perl' [-fpermissive]
     _const2perl::_const2perl( char *sModName ) {
     ^~~~~~~~~~~
File.xs: In function 'int main(int, char**, char**)':
const2perl.h:143:63: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
 #define START_CONSTS( sModName ) _const2perl const2( sModName );
                                                               ^
File.xs:28:5: note: in expansion of macro 'START_CONSTS'
 #if (PERL_REVISION <= 5 && PERL_VERSION < 5) || defined(__CYGWIN__)
     ^~~~~~~~~~~~
const2perl.h:144:60: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
 #define const2perl( const )  const2.mkconst( #const, const )
                                                            ^
File.xs:40:5: note: in expansion of macro 'const2perl'
 #  undef _open_osfhandle /* stolen_open_osfhandle() isn't available here */
     ^~~~~~~~~~
const2perl.h:144:60: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
 #define const2perl( const )  const2.mkconst( #const, const )
                                                            ^
...