[Toybox] awk seen in the wild

[enh]

https://github.com/android-ndk/ndk/issues/133#issuecomment-231318129
is the first time in about a decade i've seen awk more complicated
than "print $2" in the wild...

  readelf -sW toolkit/library/libxul.so |grep FUNC |awk '$2 ~ /[048c]$/ {print}'

ruins my genius plan to "implement" an awk that only supports "print
$(\d+)"... :-)