Make standard conformance for C++

Use SDK 10.
Use toolset v141.
Conformance mode is enable.

Check the following link for mre detail:
https://github.com/notepad-plus-plus/notepad-plus-plus/pull/6054

PowerEditor/visual.net/notepadPlus.vcxproj

@@ -23,7 +23,7 @@
     <ProjectGuid>{FCF60E65-1B78-4D1D-AB59-4FC00AC8C248}</ProjectGuid>
     <RootNamespace>Notepad++</RootNamespace>
     <Keyword>Win32Proj</Keyword>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.17763.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Unicode Release|Win32'" Label="Configuration">
@@ -107,7 +107,7 @@
       <SmallerTypeCheck>false</SmallerTypeCheck>
       <DisableSpecificWarnings>4091;4456;4457;4459</DisableSpecificWarnings>
       <AdditionalOptions>/Zc:strictStrings %(AdditionalOptions)</AdditionalOptions>
-      <ConformanceMode>false</ConformanceMode>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <AdditionalOptions>/fixed:no %(AdditionalOptions)</AdditionalOptions>
@@ -145,7 +145,7 @@
       <SmallerTypeCheck>false</SmallerTypeCheck>
       <DisableSpecificWarnings>4091;4456;4457;4459</DisableSpecificWarnings>
       <AdditionalOptions>/Zc:strictStrings %(AdditionalOptions)</AdditionalOptions>
-      <ConformanceMode>false</ConformanceMode>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <AdditionalOptions>/fixed:no %(AdditionalOptions)</AdditionalOptions>
@@ -189,7 +189,7 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <DisableSpecificWarnings>4091;4456;4457;4459</DisableSpecificWarnings>
       <AdditionalOptions>/Zc:strictStrings %(AdditionalOptions)</AdditionalOptions>
-      <ConformanceMode>false</ConformanceMode>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <AdditionalDependencies>comctl32.lib;shlwapi.lib;shell32.lib;Oleacc.lib;Dbghelp.lib;Version.lib;Crypt32.lib;wintrust.lib;Sensapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -241,7 +241,7 @@ copy ..\src\contextMenu.xml ..\bin\contextMenu.xml
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <DisableSpecificWarnings>4091;4456;4457;4459</DisableSpecificWarnings>
       <AdditionalOptions>/Zc:strictStrings %(AdditionalOptions)</AdditionalOptions>
-      <ConformanceMode>false</ConformanceMode>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <AdditionalDependencies>comctl32.lib;shlwapi.lib;shell32.lib;Oleacc.lib;Dbghelp.lib;Version.lib;Crypt32.lib;wintrust.lib;Sensapi.lib;%(AdditionalDependencies)</AdditionalDependencies>