scripts: recover on partially downloaded files

Download to an intermediate temp file, and rename it to its final
name only of download succeeds.

This catches both a failed download, and also the case where the user
interrupts the download. Thus, the a partial download gets discarded,
and we no longer try to extract a partial tarball, which we would
previously have done.

Suggested by Thomas PETAZZONI.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

scripts: call curl and wget in sequence

It can happen, in some circumpstances, than one can succeed where
the other would fail. Those cases involves convoluted enterprise
networks with proxies playing tricks.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

scripts: remove aria2c as downloader, retain only curl and wget

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

cc/gcc: fix pr42289: incorrect alignment on OABI

Fix building libffi on OABI.
Although it has been marked as 4.3-only, it is stil not fixed,
and also applies to 4.4.x

See:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42289

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

cc/gcc: 4.4.5, add arm-softfloat-libgcc patch from buildroot

Reported-by: M P <buserror@gmail.com>
[Yann E. MORIN: add the patch to other 4.4.x]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

kernel/linux: add latest versions

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

complibs/CLooG: only install the libraries

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

scripts/xldd: better find sysroot with old gcc

Only starting with 4.4 does gcc have a -print-sysroot option.
For 4.3 or before, we have to play some tricks:
- ask gcc where libc.so is,
(we expect it in ${sysroot}/usr/lib/libc.so)
- trim /usr/lib/libc.so from the result

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from aa2305c5b2a57fbcda9a1b5bb5fb3a476ac49a13)

scripts/xldd: stop at first match

Break the library search loop as soon as a match is found.
Previously, if a library was present in different places,
then the last occurence would be returned, when the first
one would have been used at runtime.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 78d2f99d403f7092203fc7a119ec19f9a2108afa)

scripts/xldd: fix version string

The version string was hard-coded.
Now, the version string follows the crosstool-NG version.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from e826624966a1672422711f779d98686e03a30b90)

scripts/xldd: fix typoes

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from dbecd99ecba51980ec9938b1313effeb45ef2ce7)

scripts/xldd: install only when shared libs enabled

When the toolchain has no support for shared libraries, there is no
point in installing the cross-ldd helper.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 032ae3253a655d859f25a5c2bac1b72051f950b0)

scripts/xldd: try to handle RPATH tags

The RPATH tags allow a binary to tell the dynamic linker what
directories to search for libraries. The so-added paths are
searched into before any other paths.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

scripts/xldd: better handle the origin of the library

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

scripts/xldd: avoid reporting duplicates

Once a NEEDED dependency has been solved, do not report it
if other dependencies depend on it.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>