[oe] How to select specific version of dependant component

[Andrew Tverdohlebov]

> its an override. if you want to know what overrides are read the manual.
> and in future don't top post its not readable flow.

If you look into the OpenEmbedded User Manual yourself smart guy, you will 
probably find that the section "overrides" is a stub.  There is also nothing 
usefull regarding purpose of  '_local'