don't return G_IO_STATUS_AGAIN if we're doing blocking I/O; just keep

don't return G_IO_STATUS_AGAIN if we're doing blocking I/O; just keep

	* libsoup/soup-gnutls.c (do_handshake): don't return
	G_IO_STATUS_AGAIN if we're doing blocking I/O; just keep retrying
	until the handshake is complete.
	(soup_gnutls_read, soup_gnutls_write): if we get
	GNUTLS_E_REHANDSHAKE, call do_handshake() immediately rather than
	returning G_IO_STATUS_AGAIN; if the socket is blocking then
	G_IO_STATUS_AGAIN is wrong, and if the socket is non-blocking, we
	might already need to return SOUP_SSL_ERROR_HANDSHAKE_NEEDS_WRITE
	or SOUP_SSL_ERROR_HANDSHAKE_NEEDS_READ.

	#415402, based on a patch from Jacob Berkman.

	* tests/ssl-test.c: basic ssl test. In particular, tests that
	rehandshake requests are handled correctly during both synchronous
	and asynchronous I/O. Might eventually test other stuff too...

	* configure.in:
	* tests/Makefile.am: updates for ssl-test

svn path=/trunk/; revision=914