K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2012-04-16T10:43:06.376493Z
K 7
svn:log
V 359
zfsboot: honor -q if it's present in boot.config

Before r228267 the option was honored but the original content of
boot.config was not preserved.  I tried to fix that but missed the idea.
Now the proper way of doing things is taken from i386/boo2.
Also, a comment is added to explain this a little bit unobvious
behavior.

Inspired by:	jhb
MFC after:	5 days

END