The _tkinter subproject works with VC6 again.
diff --git a/PC/VC6/_tkinter.dsp b/PC/VC6/_tkinter.dsp
index d0bb2f0..18104e3 100644
--- a/PC/VC6/_tkinter.dsp
+++ b/PC/VC6/_tkinter.dsp
@@ -54,7 +54,7 @@
 # ADD BSC32 /nologo

 LINK32=link.exe

 # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /debug /machine:I386 /pdbtype:sept

-# ADD LINK32 ..\..\tcl84\lib\tk84.lib ..\..\tcl84\lib\tcl84.lib odbc32.lib odbccp32.lib user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib /nologo /base:"0x1e190000" /subsystem:windows /dll /debug /machine:I386 /out:"./_tkinter_d.pyd" /pdbtype:sept /libpath:"C:\Program Files\Tcl\lib"

+# ADD LINK32 ..\..\..\tcl84\lib\tk84.lib ..\..\..\tcl84\lib\tcl84.lib odbc32.lib odbccp32.lib user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib /nologo /base:"0x1e190000" /subsystem:windows /dll /debug /machine:I386 /out:"./_tkinter_d.pyd" /pdbtype:sept /libpath:"C:\Program Files\Tcl\lib"

 # SUBTRACT LINK32 /pdb:none

 

 !ELSEIF  "$(CFG)" == "_tkinter - Win32 Release"

@@ -82,7 +82,7 @@
 # ADD BSC32 /nologo

 LINK32=link.exe

 # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /machine:I386

-# ADD LINK32 ..\..\tcl84\lib\tk84.lib ..\..\tcl84\lib\tcl84.lib odbc32.lib odbccp32.lib user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib /nologo /base:"0x1e190000" /subsystem:windows /dll /debug /machine:I386 /out:"./_tkinter.pyd" /libpath:"C:\Program Files\Tcl\lib"

+# ADD LINK32 ..\..\..\tcl84\lib\tk84.lib ..\..\..\tcl84\lib\tcl84.lib odbc32.lib odbccp32.lib user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib /nologo /base:"0x1e190000" /subsystem:windows /dll /debug /machine:I386 /out:"./_tkinter.pyd" /libpath:"C:\Program Files\Tcl\lib"

 # SUBTRACT LINK32 /pdb:none

 

 !ENDIF