afd086 pkgtool.sh: optionally source ${HOME}/pkgtool.vars to provide defaults for -a, -b, -m, -M.

Authored and Committed by lalbornoz a year ago
    pkgtool.sh: optionally source ${HOME}/pkgtool.vars to provide defaults for -a, -b, -m, -M.
    etc/pkgtool.usage: updated.
    etc/README.md: updated.
    
        
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