* mail-format.c (handle_message_rfc822): use <blockquote> rather
than <center><table border=1 width=95%> to frame the embedded
message. If <pre> text in the subtable won't fit in the 95% width,
GtkHTML will write past the border of the table (and
<blockquote><table border=1> causes creeping updates so it's not
usable for now).
svn path=/trunk/; revision=3352