K 10
svn:author
V 4
bapt
K 8
svn:date
V 27
2015-09-15T05:46:55.051482Z
K 7
svn:log
V 384
MFC: r287579

Implement pubkey support for the bootstrap

Note that to not interfer with finger print it expects a signature on pkg itself
which is named pkg.txz.pubkeysign

To genrate it:
echo -n "$(sha256 -q pkg.txz)" | openssl dgst -sha256 -sign /thekey \
    -binary -out ./pkg.txz.pubkeysig

Note the "echo -n" which prevent signing the '\n' one would get otherwise

PR:		202622

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