* choose.cc (scan_downloaded_files): scan for existing files, so

	* choose.cc (scan_downloaded_files): scan for existing files, so
	that the user only sees new downloads.

	* nio-ie5.cc (NetIO_IE5): pre-check for wininet.dll, enable dial-up
	* site.cc (do_site): if we can't download the mirror list, go back
	to the net setup box to choose another transport.
	* autoload.c: add more functions
	* Makefile.in (ALL_DEP_LDLIBS): remove wininet.a
	* resource.h: add WININET message

	* net.cc (do_net): no longer default to IE5
	* simpsock.h (class SimpleSocket): new, simplify socket operations
	* simpsock.cc: ditto
	* nio-http.h: new, for direct http protocol
	* nio-http.cc: ditto
	* nio-ftp.h: new, for direct http protocol
	* nio-ftp.cc: ditto
	* netio.cc (set_url): move initialization here to handle redirections
	(open): add direct http/ftp
	* netio.h (NetIO::set_url): new

	* log.cc (log_save): create directory for log if needed

	* hash.cc, hash.h: new
	* Makefile: add hash.o
	* choose.cc: enable "uninstall" option
	* download.cc: invert action test to accomodate uninstalling
	* ini.h: add ACTION_UNINSTALL
	* install.cc: add uninstall functionality
	* res.rc: make install tag changeable
	* resource.h: add uninstall resources

	* res.rc: update mirror list URL