Update bash completion

[gentoo90]

Get rid of the removed options and add the new ones.

[rust-highfive]

r? @alexcrichton

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[gentoo90]

I used a bash scripth to check what should be updated. I don't think it should be commited, so I'll just live it here in the comment:

#!/bin/bash

BASHCOMP_SCRIPT=./cargo.bashcomp.sh

rm -rf cargo/ comp/
mkdir cargo/ comp/


eval $(grep -P '^\tlocal\s(opt_)' "$BASHCOMP_SCRIPT" | cut -c 8-)

__cargo_commands=$(cargo --list 2>/dev/null | awk 'NR>1 {print $1}')
for i in ${__cargo_commands}; do
	echo ======$i======

	cargo help $i | grep -oP -- '\s-[\w\-]*' | sort -u | cut -c 2- > cargo/$i.list

	cmd="opt__$(echo "$i" | sed 's/-/_/g')"
	echo "${!cmd}" | sed 's/ /\n/g' | sort > comp/$i.list

	diff -y cargo/$i.list comp/$i.list
done

meld cargo/ comp/

[alexcrichton]

@bors: r+

[bors]

📌 Commit db040bf has been approved by alexcrichton

[bors]

⌛ Testing commit db040bf with merge 735f648...

[bors]

☀️ Test successful - checks-azure
Approved by: alexcrichton
Pushing 735f648 to master...