use the /Brepro flag in library generation to avoid timestamps in the executable and get reproducable builds.

Author: kristjanvalur

lib/win_x64/stackman.lib

@@ -68,6 +68,9 @@
       </SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
+    <Lib>
+      <AdditionalOptions>/Brepro %(AdditionalOptions)</AdditionalOptions>
+    </Lib>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
@@ -84,6 +87,9 @@
       </SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
+    <Lib>
+      <AdditionalOptions>/Brepro %(AdditionalOptions)</AdditionalOptions>
+    </Lib>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\platforms\platform.h" />