K 10
svn:author
V 3
sjg
K 8
svn:date
V 27
2020-06-08T18:13:38.673577Z
K 7
svn:log
V 291
loader: install allow for more complete device spec in url

Rework to simplify and impose sane url syntax.
That is we allow for file://[devname[:fstype]]/package

Reviewed by:	stevek
MFC after:	1 week
Sponsored by:	Juniper Networks
Differential Revision: https://reviews.freebsd.org//D25134

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