Add script to determine dependency sizes

export GOPATH=/foo
sh contrib/script/size.sh

Signed-off-by: baude <bbaude@redhat.com>

Closes: #535
Approved by: baude

contrib/script/size.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+: "${GOPATH?Need to set GOPATH}"
+
+cd cmd/podman/ && eval `go build -work -a 2>&1` && find $WORK -type f -name "*.a" | xargs -I{} du -hxs "{}" | sort -rh | sed -e s:${WORK}/::g