Add crankshaft Raspberry Pi distro to wild tests.

Getting 7 parse errors like this, which I think is a legit bug!  The
redirects are unnecessary.

  HOME="`cd $0 >/dev/null 2>&1; pwd`" >/dev/null 2>&1
  ^~~~~
  Got redirects in global assignment

test/wild.sh

@@ -172,6 +172,7 @@ all-manifests() {
  _sh-manifest ~/git/other/linuxkit distro
  _sh-manifest ~/git/other/portage distro
  _sh-manifest ~/git/wild/distro/woof-CE distro
  _sh-manifest ~/git/wild/distro/crankshaft distro

  src=~/git/alpine/aports
  _manifest distro/alpine-aports $src \
@@ -435,8 +436,11 @@ make-archive() {
  # $1 is project
  # $2 is abspath of source
  # $3 is rel path within project
  local out=_tmp/wild/wild-source.tar.gz
  rm -f $out
  awk '{print $2 " " $1 "/" $3 }' $MANIFEST \
    | multi tar _tmp/wild/wild-source.tar.gz
    | multi tar $out
  ls -l $out
}

# 442K lines without "big" and without ltmain.sh