Make scripts all be #!/bin/bash

sh is rather inconvenient.  I am about to introduce a bashism in
vars.sh.frag and various others.

dev/filter-semver.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Given a full version string, output just the part that is significant for
 # semver. i.e.. 0.x.* becomes 0.x and x.* becomes x for x != 0.
 sed -r \

dev/grant-dm-perms.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Grant DM upload permissions on all crates maintained by a DM.
 
 if [ "$#" -ne 1 ]; then

dev/link-patches.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Symlink {build => src}/$pkg/debian/patches for easier editing.
 #
 # If you give a second argument $2, will create this patch, add Cargo.toml to

dev/list-binpkgs.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # List all packages that produce rust binaries, from this repo.
 grep -l "\[packages.bin\]" src/*/debian/debcargo.toml \
   | cut -d/ -f2 \

dev/list-remaining-deps.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 abort() { local x=$1; shift; for i in "$@"; do echo >&2 "$0: abort: $i"; done; exit "$x"; }
 

dev/list-rfs.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 for i in src/*/debian/RFS; do
     echo "$(git log -1 --pretty="format:%ct" "$i")" "$i"
 done | sort  | while read t i; do

repackage.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Repackage a crate at the exact version that it was packaged at.
 #
 # Usage: ./repackage.sh <CRATE> [<SEMVER>]

update.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Package or update a new or existing crate.
 #
 # Usage: [REALVER=<EXACTVER>] ./release.sh <CRATE> [<SEMVER>]