K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2010-10-26T19:11:09.644560Z
K 7
svn:log
V 199
- Save errno values before calling warn(3) so that errors are correctly
  reported.
- Use powerof2() from <sys/param.h> rather than a copy and paste version.

Submitted by:	gcooper
MFC after:	1 week

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