VS: Mark Windows Phone and Store targets as App Containers

* Add AppContainerApplication to non-UTILITY targets
* Generate app manifest and related files if project does not provide them.
  Place them in a per-target directory to avoid clashes.
* Mark WinRT components with WinMDAssembly
* Import Windows Phone 8.0 targets in .vcxproj files when necessary,
  and reference platform.winmd.
Inspired-by: Paul Annetts <paul@lightunobscured.com>

.gitattributes

@@ -12,6 +12,8 @@ configure        crlf=input
 *.dsp           -crlf
 *.dsptemplate   -crlf
 *.dsw           -crlf
+*.pfx           -crlf
+*.png           -crlf
 *.sln           -crlf
 *.vcproj        -crlf
 

Source/cmVisualStudio10TargetGenerator.h

@@ -70,6 +70,14 @@ private:
   void WriteWinRTPackageCertificateKeyFile();
   void WritePathAndIncrementalLinkOptions();
   void WriteItemDefinitionGroups();
+  void VerifyNecessaryFiles();
+  void WriteMissingFiles();
+  void WriteMissingFilesWP80();
+  void WriteMissingFilesWP81();
+  void WriteMissingFilesWS80();
+  void WriteMissingFilesWS81();
+  void WriteCommonMissingFiles(const std::string& manifestFile);
+  void WriteTargetSpecificReferences();
 
   bool ComputeClOptions();
   bool ComputeClOptions(std::string const& configName);
@@ -130,6 +138,9 @@ private:
   cmGeneratedFileStream* BuildFileStream;
   cmLocalVisualStudio7Generator* LocalGenerator;
   std::set<cmSourceFile const*> SourcesVisited;
+  bool IsMissingFiles;
+  std::vector<std::string> AddedFiles;
+  std::string DefaultArtifactDir;
 
   typedef std::map<std::string, ToolSources> ToolSourceMap;
   ToolSourceMap Tools;