sourcewindow.c: fixed scrolling problem on first click.
remember the last compose window position.
moved two functions from prefs_filter.c to filter.c.
added wrappers for C library function that take pathname arguments.
don't use 'destroy' signal to destroy objects.
made error check strict on Japanese code conversion.
made every code conversion API allocate new memory.
automatically show horizontal scroll bar in text view.
replaced intl.h with glib/gi18n.h.
several code conversion fix.
set shadow type of GtkTextView, and don't set border_width of toolbars.
Initial import of Sylpheed (GTK2 version).