[Midnightbsd-cvs] src: bin/sh: const some stuff and fix some comments

[laffer1 at midnightbsd.org]

Log Message:
-----------
const some stuff and fix some comments

Modified Files:
--------------
    src/bin/sh:
        trap.h (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/bin/sh/trap.h?r1=1.3&r2=1.4)
        show.h (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/bin/sh/show.h?r1=1.3&r2=1.4)
        show.c (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/bin/sh/show.c?r1=1.3&r2=1.4)
        shell.h (r1.4 -> r1.5)
        (http://cvsweb.midnightbsd.org/src/bin/sh/shell.h?r1=1.4&r2=1.5)