Convert to VS2015 - (oops WinMerge#1)

 * somehow a <PropertyGroup> tag became <DLLPropertyGroup>

Author: GreyMerlin

Externals/poco/Foundation/Foundation_vs2015.vcxproj

@@ -18,13 +18,13 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <DLLPropertyGroup Label="Globals">
+  <PropertyGroup Label="Globals">
     <ProjectName>Foundation</ProjectName>
     <ProjectGuid>{8164D41D-B053-405B-826C-CF37AC0EF176}</ProjectGuid>
     <RootNamespace>Foundation</RootNamespace>
     <Keyword>Win32Proj</Keyword>
     <WindowsTargetPlatformVersion>10.0.14393.0</WindowsTargetPlatformVersion>
-  </DLLPropertyGroup>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='UnicodeRelease|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>