[oe] autotools_stage already inherits autotools

[Koen Kooi]

Hi,

Lately a number of commits were made doing this:

-inherit autotools
+inherit autotools autotools_stage

which is bogus, since autotools_stage.bbclass consists of:

inherit autotools

do_stage () {
     autotools_stage_all
}

Summary: inherit autotools autotools_stage = BAD, inherit 
autotools_stage = GOOD

regards,

Koen