removed vertical padding of the folder selection dialog.
foldersel.c: fixed a bug that bold face was disabled with GLib 2.10 and Pango 1.12.
foldersel.c: place dialog at the center on parent window.
foldersel.c: also select top folder on FOLDER_SEL_ALL.
display folder names of folder selection dialog with new/unread representation.
made the order of buttons comply with GNOME HIG.
implemented folder move.
expand parent folder when new one is created.
reimplemented summary view with GtkTreeView.
reimplemented folder view with GtkTreeView.
made column of TreeView resize automatically.
reimplemented folder selection dialog using GtkTreeView.
remember the state of the expander of file save dialog.
replaced intl.h with glib/gi18n.h.
use GTK stock button for dialog button set.
Initial import of Sylpheed (GTK2 version).