Add an 'unknown' machine type to the powerpc toolchain

Like for x86 the powerpc toolchains needs a machine name,
'unknown' being the generic one.

Change-Id: I788955ac3ff6bafe0f3fe0ad82bb8c1f1b0c3b5e
Signed-off-by: Alban Bedel <albeu@free.fr>
Reviewed-on: http://review.adnet.avionic-design.de/316
Reviewed-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Add build/ and download/ to .gitignore

Change-Id: I443aeede3f1a878fe092f449465bed4d9e5de319
Signed-off-by: Alban Bedel <albeu@free.fr>
Reviewed-on: http://review.adnet.avionic-design.de/318
Reviewed-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
glibc: Set DESTDIR for installation.

install_root seems not to be honoured correctly on all systems. Set DESTDIR
additionally which works well here, but keep install_root for the case that
DESTDIR is broken somewhere else.

Change-Id: Ifbb17315c2ad113e9954aa345931d97b42358df1
Signed-off-by: Julian Scheel <julian@jusst.de>
Reviewed-on: http://review.adnet.avionic-design.de/344
Reviewed-by: Alban Bedel <alban.bedel@avionic-design.de>
docs: Update readme.

List the actually available targets in the README file.

Change-Id: I19926f56f2d2bf6dbda7e805222d778090547a08
Signed-off-by: Julian Scheel <julian@jusst.de>
Reviewed-on: http://review.adnet.avionic-design.de/462
Reviewed-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Add build requirements to readme.

Change-Id: If25966ef6cbc979a091883809141ec61ffddeb15
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/463
Reviewed-by: Julian Scheel <julian.scheel@avionic-design.de>
tests: Fix build-tests script

The toolchain for powerpc has been renamed, but the script was not updated to.

Change-Id: I129ee6e377464af396cf370321dd5f976832b6b4
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/464
Reviewed-by: Julian Scheel <julian.scheel@avionic-design.de>