Fix MSVC project files.

Author: asfernandes

builds/win32/msvc15/common.vcxproj.filters

@@ -449,9 +449,6 @@
     <ClInclude Include="..\..\..\src\common\classes\objects_array.h">
       <Filter>headers</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\..\src\common\classes\MetaString.h">
-      <Filter>headers</Filter>
-    </ClInclude>
     <ClInclude Include="..\..\..\src\common\classes\RefCounted.h">
       <Filter>headers</Filter>
     </ClInclude>
@@ -611,6 +608,9 @@
     <ClInclude Include="..\..\..\src\common\classes\ParsedList.h">
       <Filter>headers</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\src\common\classes\QualifiedMetaString.h">
+      <Filter>headers</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\..\src\common\Int128.h">
       <Filter>headers</Filter>
     </ClInclude>