git: nrelease: More unambiguous label based on gitrev.sh

[Aaron LI]

commit 9d8dda4ab8194e673639149f695a5706cf264e5c
Author: Aaron LI <aly at aaronly.me>
Date:   Thu Feb 28 23:17:32 2019 +0800

    nrelease: More unambiguous label based on gitrev.sh
    
    Use the git revision to compose the label to make it more unambiguous.
    
    Use the same label as the .iso volume ID, but truncated to be <= 32
    characters.  Thank zrj for the make variable operation :D
    
    Discusssed-with: swildner

Summary of changes:
 nrelease/Makefile | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/9d8dda4ab8194e673639149f695a5706cf264e5c


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