profile: Add comment about fallback profile usage.
resource: change functionality.

Resource plugin looks for media.* properties in request proplist.
1) if no media.* is found in proplist, default for ENABLED for all
sinks.
2) if media.foo is found in proplist, default for DISABLED for all
sinks, and enable only those specifically enabled in proplist.
Merge branch 'dev' of https://github.com/jusa/ngfd
ffmemless: Check for null file_name parameter

ffm_read_props segfaults if null file_name parameter is passed.
Added a check to return NULL in this case instead of crashing.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@jollamobile.com>
ffmemless: Get system settings file from env

Changed the system wide override settings file path
to come from FF_MEMLESS_SETTINGS evironment variable instead
of configured file path.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@jollamobile.com>