Add a hotkey for disabling the framelimit.

Atm this is hardcoded to '\t'.

Source/Core/DolphinWX/Frame.cpp

@@ -940,6 +940,10 @@ void CFrame::OnKeyDown(wxKeyEvent& event)
 			OSDChoice = 4;
 			g_Config.bDisableFog = !g_Config.bDisableFog;
 		}
+		else if (IsHotkey(event, HK_TOGGLE_THROTTLE))
+		{
+			Core::IsFramelimiterTempDisabled = true;
+		}
 		else if (IsHotkey(event, HK_INCREASE_FRAME_LIMIT))
 		{
 			if (++SConfig::GetInstance().m_Framelimit > 0x19)
@@ -1040,7 +1044,18 @@ void CFrame::OnKeyDown(wxKeyEvent& event)
 
 void CFrame::OnKeyUp(wxKeyEvent& event)
 {
-	event.Skip();
+	if(Core::GetState() != Core::CORE_UNINITIALIZED &&
+			(RendererHasFocus() || TASInputHasFocus()))
+	{
+		if (IsHotkey(event, HK_TOGGLE_THROTTLE))
+		{
+			Core::IsFramelimiterTempDisabled = false;
+		}
+	}
+	else
+	{
+		event.Skip();
+	}
 }
 
 void CFrame::OnMouse(wxMouseEvent& event)

Source/Core/DolphinWX/HotkeyDlg.cpp

@@ -233,6 +233,7 @@ void HotkeyConfigDialog::CreateHotkeyGUIControls(void)
 		_("Toggle Aspect Ratio"),
 		_("Toggle EFB Copies"),
 		_("Toggle Fog"),
+		_("Toggle Frame limit"),
 		_("Increase Frame limit"),
 		_("Decrease Frame limit"),