[IE] First round of ATL removal

src/plugin/PluginSystem.cpp

 #include "PluginStdAfx.h"
 
 // Internet / FTP
 #include <wininet.h>
 
 // IP adapter
 #include <iphlpapi.h>
 
 #include "PluginSystem.h"
 #include "PluginClient.h"
@@ skipping 40 matching lines @@
       s_instance = systemInstance;
     }
 
     system = s_instance;
   }
   s_criticalSection.Unlock();
 
   return system;
 }
 
-CString CPluginSystem::GetBrowserLanguage() const
+std::wstring CPluginSystem::GetBrowserLanguage() const
 {
   LANGID lcid = ::GetUserDefaultLangID();
-  TCHAR language[128];
+  wchar_t language[128];
   memset(language, 0, sizeof(language));
 
-  TCHAR country[128];
+  wchar_t country[128];
   memset(language, 0, sizeof(country));
 
-  CString lang;
+  std::wstring lang;
 
   int res = ::GetLocaleInfo(lcid, LOCALE_SISO639LANGNAME, language, 127);
   if (res == 0)
   {
-    DEBUG_ERROR_LOG(::GetLastError(), PLUGIN_ERROR_SYSINFO, PLUGIN_ERROR_SYSINFO_BROWSER_LANGUAGE, "System::GetBrowserLang - Failed");
+    DEBUG_ERROR_LOG(::GetLastError(), PLUGIN_ERROR_SYSINFO, PLUGIN_ERROR_SYSINFO_BROWSER_LANGUAGE, L"System::GetBrowserLang - Failed");
   }
   else
   {
-    lang.Append(language);
+    lang +=language ;
   }
-
-  lang.Append(L"-");
-
+  lang += L"-";
 
   res = ::GetLocaleInfo(lcid, LOCALE_SISO3166CTRYNAME, country, 127);
   if (res == 0)
   {
-    DEBUG_ERROR_LOG(::GetLastError(), PLUGIN_ERROR_SYSINFO, PLUGIN_ERROR_SYSINFO_BROWSER_LANGUAGE, "System::GetBrowserLang - failed to retrieve country");
+    DEBUG_ERROR_LOG(::GetLastError(), PLUGIN_ERROR_SYSINFO, PLUGIN_ERROR_SYSINFO_BROWSER_LANGUAGE, L"System::GetBrowserLang - failed to retrieve country");
   }
   else
   {
-    lang.Append(country);
+    lang += country;
   }
-
   return lang;
 }