[ccache] ccacje direct mode without fall back to running the preprocessor

[Andrew Stubbs]

On 10/09/14 08:24, vkr wrote:
> Why is that? I mean, when drop preprocessing only when an env variable is set,
> why is it not the right approach?

The development sources on the master branch has all-new option and 
environment variable processing code.

The part where you act on the option is probably in the right place, but 
it ought to be read elsewhere. I'm not sure how that worked in 3.1.9.

Andrew