arch/avr32: Fix download of header files

This patch fixes the download of the avr32 headers in crosstool-ng by
fetching them directly from Atmel's web site instead of the now-broken URL
given by the original author of the avr32-header-fetching modification,
who fetched them from a copy on his own, now-defunct server.

It also adds the necessary logic to extract from a zip file, as that is
how the headers are packaged.

To configure it for avr32 after launching ct-ng menuconfig in an empty
directory:

Paths and misc options ->
Shell to use as CONFIG_SHELL = sh
Target options ->
Target Architecture = avr32
Toolchain options ->
Tuple's alias = avr32
Binary utilities ->
binutils version = 2.18a
C compiler
gcc version = 4.2.2
C-library
newlib version = 1.17.0
Enable IOs on long long = yes
Enable IOs on floats and doubles = yes
Disable the syscalls supplied with newlib = yes

CONFIG_SHELL is necessary to get round the "fragment: command not
found" bug when binutils-2.18 is configured using bash.

Prepared against crosstool-ng mercurial trunk on 31 March 2012.

Signed-off-by: Martin Guy <martinwguy@gmail.com>
[yann.morin.1998@free.fr: update bundles sample accordingly]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <CAL4-wQrg_NQ7jm-NCADqeyQr9twyhtx42OUGNThP6gWeqZc=kw@mail.gmail.com>
Patchwork-Id: 232612

 # To be sourced

 _ct_ng () {

     local cur prev samples show_samples actions steps start_steps stop_steps ct_ng_opts vars

     COMPREPLY=()

     cur=$(_get_cword)

     prev=${COMP_WORDS[COMP_CWORD-1]}

     samples=$( "${COMP_WORDS[0]}" list-samples-short 2>/dev/null )

     show_samples=$(echo "${samples}" |sed -r -e 's/(^| )/\1show-/g;')

     build_samples=$(echo "${samples}" |sed -r -e 's/(^| )/\1build-/g;')

     check_samples=$(echo "${samples}" |sed -r -e 's/(^| )/\1check-/g;')

     steps=$(${COMP_WORDS[0]} list-steps 2>/dev/null |awk '$1 == "-" { print $2; }')

     start_steps=$(echo "${steps}" |sed -r -e 's/($| )/\1+/;')

     stop_steps=$(echo "${steps}" |sed -r -e 's/(^| )/+\1/;')

     actions='help menuconfig oldconfig saveconfig extractconfig

              defconfig savedefconfig

              build build. build-all build-all.

              wiki-samples list-samples list-samples-short check-samples

              list-steps

              show-tuple show-all show-config

              clean distclean updatetools

              tarball version'

     vars="RESTART= STOP= PREFIX= V= DEFCONFIG="

     ct_ng_opts="${samples} ${show_samples} ${build_samples} ${check_samples}

                 ${steps} ${start_steps} ${stop_steps}

                 ${actions} ${vars}"

     COMPREPLY=($(compgen -W "${ct_ng_opts}" -- "${cur}"))

     return 0

 }

 complete -F _ct_ng ct-ng