dot/screenrc: Erase to current background colour by default.

[profile] / bin / datasyms

#! /bin/sh -e
objdump -t "$@" | sed -En '
        /^(.*\.o:) .*$/ { s//\1/; h; }
        /(\.data|\.bss|\*COM\*)[[:space:]]+[0-9]+ [^.]/ {
                x; /./ p; s/.*//; x
                s/^/    /; p
        }'