docs: move the "contributing" section to overview.txt

docs: configure no longer accepts --with-contrib

It's been a while that configure does not recognise --with-contrib.
Applying contibutions is to be done manually, using patch.

configure: force using the C locale to check messages
(transplanted from 2f44fac6b5143f7b14f5367209c9df9b1102298e)

configure: fix --with-foo=/path/to/foo

When a required tool is specified with --with-foo, store the variable
in the list.
(transplanted from 1d43b65599a4b869d83d4db67b9715b1298d74f7)

configure: force using the C locale to check messages

configure: fix --with-foo=/path/to/foo

When a required tool is specified with --with-foo, store the variable
in the list.

eglibc: add support for user provided option groups

Signed-off-by: Arnaud Vrac <avrac@freebox.fr>

samples: fix the avr32-unknown-none sample

Bizarely enough, binutils-2.18 fails to build when CONFIG_SHELL is set
to /bin/bash (although it has code to recognise bash and act accordingly).

Waht is really strange is that it does build when CONFIG_SHELL is set
to /bin/sh, *although* /bin/sh is a symlink to /bin/bash. WTF?!?!
(transplanted from 56bba7d4fc8924d276b71134b7f1ef57bed57f52)

samples: fix the avr32-unknown-none sample

Bizarely enough, binutils-2.18 fails to build when CONFIG_SHELL is set
to /bin/bash (although it has code to recognise bash and act accordingly).

Waht is really strange is that it does build when CONFIG_SHELL is set
to /bin/sh, *although* /bin/sh is a symlink to /bin/bash. WTF?!?!

Tagging release 1.5.0

1.5: update version to 1.5.0

1.5: create maintenance branch for the 1.5 series

samples: update

libelf: add libelf-0.8.12

Merge.

configure: split has_or_abort in two: one to check, one to abort

Split the has_or_abort function in two:
- one that checks if the tool if found,
- one that calls the above check, and aborts if not found

The rational behind this is to be able to check for a tool
and if not found, fallback to using our bundled version,
should the need arise (and I get time).

Merge.

libc/glibc: don't use legacy snapshots

glibc snapshots have not been updated for about the
past 5 months. Consider them to be deprecated, now.

libc/glibc: remove dead code

The option to retrieve snapshots is already handled by
the generic 'specific date' and 'use latest' entries.
No need for a special case, as there's no code for it.

Merge.

debug/gdb: cleanup (remove) the static ncurses build

ncurses is built solely for the sake of building a native gdb.
The user should not rely on this library to build his/her userland,
but should rather build his/her own. So we remove it from the
sysroot after we successfully build the native gdb.

doc: update documentation, mostly eye-candy

sample: update the i686-nptl-linux-gnu sample

Update this sample, now it seems to correctly build again.

libc/eglibc: fix building for seemingly native toolchains

Build eglibc with -O2 as a fix/workaround to building
seemingly-native toolchains (see docs/overview.txt).

See:
- docs/overview.txt
- docs/known-issues.txt
- http://sourceware.org/ml/crossgcc/2009-10/msg00001.html

libc/glibc: fix building for seemingly native toolchains

Build glibc with -O2 as a fix/workaround to building
seemingly-native toolchains.

See:
- docs/overview.txt
- docs/known-issues.txt
- http://sourceware.org/ml/crossgcc/2009-09/msg00055.html

samples: upgrade some samples

Upgrading all samples is too much a hassle.
Stick with those few for now.

samples: remove arm-beagle-linux-gnueabi

Use the generic arm-cortex_a8-linux-gnueabi sample instead.

Merge.

scripts: update config.guess and config.sub

readme: document patch description