removed warnings 'GtkSpinButton: setting an adjustment with non-zero page size is deprecated'.
modified the spacing of the statusbar of address book.
made the order of buttons comply with GNOME HIG.
made LDAP bind password entry invisible.
added missing includes.
replaced intl.h with glib/gi18n.h.
use GTK stock button for button set.
Initial import of Sylpheed (GTK2 version).