layers.txt: use latest revisions of layers

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
bblayers: Add meta-python

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
layers.txt: bump bitbake, oe-core, meta-oe, meta-qt5 and meta-smartphone a bit

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
layers.txt: update to latest

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Update to use tmp-glibc instead of tmp-eglibc

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
layers.txt: bump to latest master branches

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Set BRANCH_COMMON correctly to unstable

Signed-off-by: Simon Busch <morphis@gravedo.de>