* camel-mime-part.c (write_to_stream): flush the filter stream
	before unreffing it, so it will camel_mime_filter_complete.

	* camel-stream-filter.c (camel_stream_filter_class_init): Fix a
	braino so camel_stream_flush works here.

	* camel-stream-mem.c (stream_seek): Fix a bug that resulted in
	large attachments being silently dropped.

	* providers/pop3/camel-pop3-store.c
	(camel_pop3_command_get_additional_data): Don't use g_strjoinv
	here, since it is O(n^2) on the length of the output string, and
	we can do O(n).

	* camel-mime-part-utils.c
	(simple_data_wrapper_construct_from_parser): add a CRLF decoder
	after the QP/B64 decoder if it's text.

svn path=/trunk/; revision=3658