Log Message:
-----------
POSIX fixes.
Modified Files:
--------------
src/bin/df:
df.1 (r1.4 -> r1.5)
(http://cvsweb.midnightbsd.org/src/bin/df/df.1?r1=1.4&r2=1.5)
df.c (r1.10 -> r1.11)
(http://cvsweb.midnightbsd.org/src/bin/df/df.c?r1=1.10&r2=1.11)