cc/gcc: Update gcc to 4.7.1 (v2)

Attempt #2 at updating gcc.
This time without porting gcc 4.7.0 patches forward.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Message-Id: <aeffa57986d52dd7b0a8.1341290304@flambe.is-a-geek.org>

libc/eglibc: Add eglibc 2.16

Patches don't need to come forward, as they are in this branch.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Message-Id: <6fdf77081379812820e8.1341286640@flambe.is-a-geek.org>

debug/gdb: Add gdb 7.3.1, 7.4, and 7.4.1

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Message-Id: <c917c398e95919856980.1341286289@flambe.is-a-geek.org>

scripts+samples: fix listings the samples

Since we use defconfigs to save the samples, listing all the
samples can no longer be done by passing all the sample names
at one to the script; we need to pass them one-by-one after
we expand the sample's defconfig ibnto a complete .config.

Reported-by: Bryan Hundven <bryanhundven@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

1.15: update version to 1.15.3+hg

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

Tagging release 1.15.3

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

1.15: update version to 1.15.3

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

configure: also check for install

We also need the GNU variant for this one.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
(transplanted from 0dfc9c1fcb348e354edc37aacd2e8dcb223e9ab2)

configure: add checks for objcopy and objdump

These two went MIA after the migration to an autoconf-based ./configure.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
(transplanted from 2d362c2a8ed369f72027da00ec79245cb44bbf82)

configure: check for GNU awk, not any awk

Building glibc requires GNU awk, not any other.

Reported-by: Han Sooloo <hansooloo@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
(transplanted from 4ccfca658d9bbbc4a682751332ce5b92cbdfb0fe)