MIDL generates the same file for /env win32 and /env win64

#if !defined(_M_IA64) && !defined(_M_AMD64)

#if defined(_M_AMD64)

<Tool
Name="VCMIDLTool"
TypeLibraryName="$(ProjectName).tlb"
OutputDirectory="$(SolutionDir)$(PlatformName)"
HeaderFileName="$(ProjectName)_h.h"
DLLDataFileName="$(ProjectName)_dlldata.c"
/>

<Tool
    Name="VCMIDLTool"
    TypeLibraryName="$(InputName).tlb"
    OutputDirectory="$(SolutionDir)$(PlatformName)"
    HeaderFileName="$(InputName)_i.h"
    DLLDataFileName="$(InputName)_dlldata.c"
    InterfaceIdentifierFileName="$(InputName)_i.c"
    ProxyFileName="$(InputName)_p.c"
/>

<Tool Name="VCCLCompilerTool" ...
AdditionalIncludeDirectories="...;"$(SolutionDir)$(PlatformName);""