config/version: set version back to 'devel'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge remote-tracking branch 'upstream/openelec-5.0' into openelec-5.0
[aml] Create Amlogic ZIP update and auto-install package if update-binary and updater-script are present in a project directory
[aml] Fix the path to update-binary and upadater-script