layer.conf: Use .= for adding to BBPATH and += to BBFILES

  (original commit: b3ec2fa1ad055caa507391da0e1e5eb0965c92fc)

Fixes parsing errors which is appearing after this commit to
meta-openembedded

http://cgit.openembedded.org/meta-openembedded/commit/?id=3c21a46020bd0816579648f684c41dbd6333583e

This triggers
exception NameError: name 'base_contains' is not defined
without this change

Signed-off-by: Andrei Gherzan <andrei.gherzan@windriver.com>
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Joe MacDonald <joe.macdonald@windriver.com>
cifs-utils: add 5.9

  (original commit: bce6c9fa24757b346df1906d30a2395c33fb397e)

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Joe MacDonald <joe.macdonald@windriver.com>
Signed-off-by: Eric Bénard <eric@eukrea.com>
cifs-utils: Add runtime recommendation to CIFS kernel module

  (original commit: 3317557635ef4771e2b4c701b0ff1b2a29cf18ce)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Joe MacDonald <joe.macdonald@windriver.com>