Split out to_lab platform config from app header

[skliper]

Originated by abrown4 (60 on babelfish):

The platform-specific config (that I need to change for a deployment) is in the to_lab_app.h, and thus common to all to_lab builds. However, I want to build and deploy multiple cfs instances, each with a to_lab. [It is simple and handy.]

Propose moving the platform-specific info into to_lab_platform_cfg.h, like the other apps.

[skliper]

Note there is a changeset on babelfish. Need to create patch and apply.