Add stream callback flags and class specific control request handler code to the incomplete Test and Measurement Class device demo.

Change over the keyboard demo's manufacturer name back to the primary author of the demo.

Demos/Device/ClassDriver/Keyboard/Descriptors.c

@@ -183,9 +183,9 @@ USB_Descriptor_String_t PROGMEM LanguageString =
  */
 USB_Descriptor_String_t PROGMEM ManufacturerString =
 {
-	.Header                 = {.Size = USB_STRING_LEN(16), .Type = DTYPE_String},
+	.Header                 = {.Size = USB_STRING_LEN(11), .Type = DTYPE_String},
 		
-	.UnicodeString          = L"Denver Gingerich"
+	.UnicodeString          = L"Dean Camera"
 };
 
 /** Product descriptor string. This is a Unicode string containing the product's details in human readable form,