move wiiuse to Source/Core and add to the main dolphin solution

make wiiuse link dynamically with hid.dll, removing the need for WDK
compile wiiuse as c++

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6394 8ced0084-cf51-0410-be5f-012b33b47a6e

SConstruct

@@ -344,7 +344,6 @@ dirs = [
     'Externals/Bochs_disasm',
     #'Externals/CLRun',
     'Externals/Lua',
-    'Externals/WiiUse/Src',
     'Externals/GLew',
     'Externals/LZO',
     #'Externals/OpenAL',
@@ -364,6 +363,7 @@ dirs = [
     'Source/Core/InputCommon/Src',
     'Source/Core/InputUICommon/Src',
     'Source/Core/VideoCommon/Src',
+    'Source/Core/wiiuse/Src',
     'Source/DSPTool/Src',
     'Source/Plugins/Plugin_DSP_HLE/Src',
     'Source/Plugins/Plugin_DSP_LLE/Src',