Fix issues with security tokens (Enhanced Protected Mode, Protected Mode etc)

src/shared/Utils.h

 #ifndef UTILS_H
 #define UTILS_H
 
 #include <algorithm>
 #include <locale>
 #include <functional>
 #include <string>
 
 #define WM_ALREADY_UP_TO_DATE WM_APP+1
 #define WM_UPDATE_CHECK_ERROR WM_APP+2
 #define WM_DOWNLOADING_UPDATE WM_APP+3
 
 bool IsWindowsVistaOrLater();
+bool IsWindows8();
 
 std::string ToUtf8String(const std::wstring& str);
 std::wstring ToUtf16String(const std::string& str);
 std::wstring GetDllDir();
 std::wstring GetAppDataPath();
 void ReplaceString(std::wstring& input, const std::wstring placeholder, const std::wstring replacement);
 
 template<class T>
 T TrimString(T text)
 {
   // Via http://stackoverflow.com/questions/216823/whats-the-best-way-to-trim-stdstring
   T trimmed(text);
   std::function<bool(T::value_type)> isspace = std::bind(&std::isspace<T::value_type>, std::placeholders::_1, std::locale::classic());
   trimmed.erase(trimmed.begin(), std::find_if(trimmed.begin(), trimmed.end(), std::not1(isspace)));
   trimmed.erase(std::find_if(trimmed.rbegin(), trimmed.rend(), std::not1(isspace)).base(), trimmed.end());
   return trimmed;
 }
 
 #endif // UTILS_H