tree a06e3ca530e046d0b72d55ffa06db19d75a34bb0
parent 41e9136667ee4f9ffd03da380e24629d7eccace4
author Eric Paris <eparis@redhat.com> 1439391266 -0400
committer Eric Paris <eparis@redhat.com> 1439391973 -0400

Do not append to default values in {String,Int}Slice

I added the ability to do: `-s=bob -s=john` and get `[]string{"bob", "john"}`

But if a default value was set to say `[]string{"eric"}` the above
operation was mistakenly resulting in: `[]string{"eric", "bob", "john"}
which was obviously not what was intended.

This is fixed by tracking if a value was parsed and overwriting the
default on the first time -s is found, but we append the 2+ time.