1.0.47.15: %FUNCALL IR1 translator macroexpands the function form

1.0.47.15: %FUNCALL IR1 translator macroexpands the function form

  Code compiled correctly without this, but added an unnecessary cast
  to FUNCTION for the lambda in

    (FUNCALL (LAMBDA ...) ...)

  forms, which prevented local-call conversion and inlining for the
  lambda. Note:

    (FUNCALL (FUNCTION (LAMBDA ...)) ...)

  forms did not suffer from this.

  Step on the way to fixing lp#720382.