bpo-30726: Add _CRT_SECURE_NO_WARNINGS to _elementtree and pyexpat projects (#2572)

PC/VS9.0/_elementtree.vcproj

@@ -105,7 +105,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				AdditionalIncludeDirectories="..\..\Modules\expat"
-				PreprocessorDefinitions="USE_PYEXPAT_CAPI;XML_STATIC"
+				PreprocessorDefinitions="_CRT_SECURE_NO_WARNINGS;USE_PYEXPAT_CAPI;XML_STATIC"
 			/>
 			<Tool
 				Name="VCManagedResourceCompilerTool"

PC/VS9.0/pyexpat.vcproj

@@ -43,7 +43,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				AdditionalIncludeDirectories=".\..\..\Modules\expat"
-				PreprocessorDefinitions="PYEXPAT_EXPORTS;XML_STATIC"
+				PreprocessorDefinitions="_CRT_SECURE_NO_WARNINGS;PYEXPAT_EXPORTS;XML_STATIC"
 			/>
 			<Tool
 				Name="VCManagedResourceCompilerTool"

PCbuild/_elementtree.vcxproj

@@ -62,7 +62,7 @@
   <ItemDefinitionGroup>
     <ClCompile>
       <AdditionalIncludeDirectories>..\Modules\expat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>USE_PYEXPAT_CAPI;XML_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;USE_PYEXPAT_CAPI;XML_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
       <BaseAddress>0x1D100000</BaseAddress>

PCbuild/pyexpat.vcxproj

@@ -59,7 +59,7 @@
   <ItemDefinitionGroup>
     <ClCompile>
       <AdditionalIncludeDirectories>$(PySourcePath)Modules\expat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>PYEXPAT_EXPORTS;XML_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;PYEXPAT_EXPORTS;XML_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>