Fix some uses of ENGINE() not detected by regex due to parenthesis.
Remove now empty engine_ptr.h
Don't worry about EFI_* not being defined, the compiler defaults to 0 if they aren't.
* new impl
* remove fsio
* inject "is ac active" to fan
* include the correct code
* include
* test
* more AC features
* AC switch vs. actual AC indicators
* include
* duh