Split off the Network configuration from Other peripherals in the Settings dialog and made PCap device configurable;

Overhauled the configuration files so that the global variables are now subdivided into sections;
Fixed CD-ROM MODE SENSE page 0x2A which was being incorrectly reported as not implemented, fixes among other things Rayman 1 and Spellcross: The Last Battle (both now see the CD-ROM and play CD Audio fine).

src/pc.c

@@ -288,6 +288,9 @@ void initpc(int argc, wchar_t *argv[])
         *p=L'\0';
         pclog("path = %ws\n", pcempath);        
 
+	/* Initialize list of PCap devices. */
+	netdev_num = network_devlist(netdev_list);
+
         for (c = 1; c < argc; c++)
         {
                 if (!_wcsicmp(argv[c], L"--help"))