Added declaration of SDL_LogInit() and SDL_LogQuit()

Fixes compile warning on Android

VisualC/SDL/SDL.vcxproj

@@ -370,6 +370,7 @@
     <ClInclude Include="..\..\src\SDL_hints_c.h" />
     <ClInclude Include="..\..\src\SDL_internal.h" />
     <ClInclude Include="..\..\src\SDL_list.h" />
+    <ClInclude Include="..\..\src\SDL_log_c.h" />
     <ClInclude Include="..\..\src\sensor\dummy\SDL_dummysensor.h" />
     <ClInclude Include="..\..\src\sensor\SDL_sensor_c.h" />
     <ClInclude Include="..\..\src\sensor\SDL_syssensor.h" />

VisualC/SDL/SDL.vcxproj.filters

@@ -825,6 +825,7 @@
     <ClInclude Include="..\..\src\SDL_assert_c.h" />
     <ClInclude Include="..\..\src\SDL_hints_c.h" />
     <ClInclude Include="..\..\src\SDL_internal.h" />
+    <ClInclude Include="..\..\src\SDL_log_c.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\audio\wasapi\SDL_wasapi.c" />