2008-08-13  Tor Lillqvist  <tml@novell.com>

	* win32/gwinhttpvfs.c
	* win32/gwinhttpvfs.h
	* win32/gwinhttpfile.c
	* win32/gwinhttpfileinputstream.c
	* win32/gwinhttpfileoutputstream.c: Refactor some common code
	snippets into helper functions. Check HTTP response status
	codes. Implement g_winhttp_file_query_info(), looking at
	Content-Length, Content-Type and Last-Modified.

	* win32/winhttp.h: Add some symbolic constants that are not
	publicly documented. Just a handful, so it should be OK to use
	information from the Windows SDK's headers.


svn path=/trunk/; revision=7350