Issue #23903: Added missed Windows-specific names to PC/python3.def.

PC/python3.def

@@ -135,11 +135,17 @@ EXPORTS
   PyErr_ProgramText=python36.PyErr_ProgramText
   PyErr_ResourceWarning=python36.PyErr_ResourceWarning
   PyErr_Restore=python36.PyErr_Restore
+  PyErr_SetExcFromWindowsErr=python36.PyErr_SetExcFromWindowsErr
+  PyErr_SetExcFromWindowsErrWithFilename=python36.PyErr_SetExcFromWindowsErrWithFilename
+  PyErr_SetExcFromWindowsErrWithFilenameObject=python36.PyErr_SetExcFromWindowsErrWithFilenameObject
+  PyErr_SetExcFromWindowsErrWithFilenameObjects=python36.PyErr_SetExcFromWindowsErrWithFilenameObjects
   PyErr_SetExcInfo=python36.PyErr_SetExcInfo
   PyErr_SetFromErrno=python36.PyErr_SetFromErrno
   PyErr_SetFromErrnoWithFilename=python36.PyErr_SetFromErrnoWithFilename
   PyErr_SetFromErrnoWithFilenameObject=python36.PyErr_SetFromErrnoWithFilenameObject
   PyErr_SetFromErrnoWithFilenameObjects=python36.PyErr_SetFromErrnoWithFilenameObjects
+  PyErr_SetFromWindowsErr=python36.PyErr_SetFromWindowsErr
+  PyErr_SetFromWindowsErrWithFilename=python36.PyErr_SetFromWindowsErrWithFilename
   PyErr_SetImportError=python36.PyErr_SetImportError
   PyErr_SetImportErrorSubclass=python36.PyErr_SetImportErrorSubclass
   PyErr_SetInterrupt=python36.PyErr_SetInterrupt
@@ -241,6 +247,7 @@ EXPORTS
   PyExc_UserWarning=python36.PyExc_UserWarning DATA
   PyExc_ValueError=python36.PyExc_ValueError DATA
   PyExc_Warning=python36.PyExc_Warning DATA
+  PyExc_WindowsError=python36.PyExc_WindowsError DATA
   PyExc_ZeroDivisionError=python36.PyExc_ZeroDivisionError DATA
   PyException_GetCause=python36.PyException_GetCause
   PyException_GetContext=python36.PyException_GetContext
@@ -417,6 +424,7 @@ EXPORTS
   PyODict_SetItem=python36.PyODict_SetItem
   PyODict_Type=python36.PyODict_Type DATA
   PyOS_AfterFork=python36.PyOS_AfterFork
+  PyOS_CheckStack=python36.PyOS_CheckStack
   PyOS_FSPath=python36.PyOS_FSPath
   PyOS_InitInterrupts=python36.PyOS_InitInterrupts
   PyOS_InputHook=python36.PyOS_InputHook DATA
@@ -617,6 +625,7 @@ EXPORTS
   PyUnicode_AsEncodedString=python36.PyUnicode_AsEncodedString
   PyUnicode_AsEncodedUnicode=python36.PyUnicode_AsEncodedUnicode
   PyUnicode_AsLatin1String=python36.PyUnicode_AsLatin1String
+  PyUnicode_AsMBCSString=python36.PyUnicode_AsMBCSString
   PyUnicode_AsRawUnicodeEscapeString=python36.PyUnicode_AsRawUnicodeEscapeString
   PyUnicode_AsUCS4=python36.PyUnicode_AsUCS4
   PyUnicode_AsUCS4Copy=python36.PyUnicode_AsUCS4Copy
@@ -636,11 +645,14 @@ EXPORTS
   PyUnicode_Decode=python36.PyUnicode_Decode
   PyUnicode_DecodeASCII=python36.PyUnicode_DecodeASCII
   PyUnicode_DecodeCharmap=python36.PyUnicode_DecodeCharmap
+  PyUnicode_DecodeCodePageStateful=python36.PyUnicode_DecodeCodePageStateful
   PyUnicode_DecodeFSDefault=python36.PyUnicode_DecodeFSDefault
   PyUnicode_DecodeFSDefaultAndSize=python36.PyUnicode_DecodeFSDefaultAndSize
   PyUnicode_DecodeLatin1=python36.PyUnicode_DecodeLatin1
   PyUnicode_DecodeLocale=python36.PyUnicode_DecodeLocale
   PyUnicode_DecodeLocaleAndSize=python36.PyUnicode_DecodeLocaleAndSize
+  PyUnicode_DecodeMBCS=python36.PyUnicode_DecodeMBCS
+  PyUnicode_DecodeMBCSStateful=python36.PyUnicode_DecodeMBCSStateful
   PyUnicode_DecodeRawUnicodeEscape=python36.PyUnicode_DecodeRawUnicodeEscape
   PyUnicode_DecodeUTF16=python36.PyUnicode_DecodeUTF16
   PyUnicode_DecodeUTF16Stateful=python36.PyUnicode_DecodeUTF16Stateful
@@ -651,6 +663,7 @@ EXPORTS
   PyUnicode_DecodeUTF8=python36.PyUnicode_DecodeUTF8
   PyUnicode_DecodeUTF8Stateful=python36.PyUnicode_DecodeUTF8Stateful
   PyUnicode_DecodeUnicodeEscape=python36.PyUnicode_DecodeUnicodeEscape
+  PyUnicode_EncodeCodePage=python36.PyUnicode_EncodeCodePage
   PyUnicode_EncodeFSDefault=python36.PyUnicode_EncodeFSDefault
   PyUnicode_EncodeLocale=python36.PyUnicode_EncodeLocale
   PyUnicode_FSConverter=python36.PyUnicode_FSConverter