edit/edit.h: moved N_menus 5 macro to editmenu.c. Renamed edit_init_menu()
to edit_create_menu().
edit/editmenu.c: added static variable EditMenuBar to store editor menus.
Reimplemented menu creation. Added new edit_create_menu() function.
edit/editwidget.c (edit_file): used edit_create_menu() instead of
edit_init_menu().