+* `TEST-LOCAL`: Like `SCRATCH` but with a specific `test-local` channel name and a local filesystem appbase. This is meant for testing an over-the-air update on the local filesystem. An extra property `LOCALDIR` must be given (e.g. `-PLOCALDIR=/home/user/tmp/test`)
+ It will set
+ - `appbase` as `file://${LOCALDIR}`
+ - application subdir as `alt`
+ - Getdown launcher can use a `file://` scheme appbase.