[OE-core] [PATCH v2] python3: make readline, gdbm, and db support conditional.

[Alexander Kanavin]

On 06/07/2017 04:49 PM, Ismo Puustinen wrote:
> The three libraries' (readline, gdbm, and db) licenses belong to the
> GPLv3 family. Add them to to PACKAGECONFIG so they can be switched off
> if the licensing doesn't allow using them. Python build system
> autodetects the dependencies but doesn't allow them to be explicitly
> disabled, so just deal with the dependencies.

db should be taken out from this patch, it's no longer a gplv3 concern 
now that we're providing db 5.x only :)

Alex