[RFA] trailing backslash in top-level Makefile

[DJ Delorie]

> > --- a/Makefile.tpl
> > +++ b/Makefile.tpl
> > @@ -628,8 +628,9 @@ all:
> >  	  $(MAKE) $(RECURSE_FLAGS_TO_PASS) all-host all-target \
> >  @if gcc-bootstrap
> >  	    ; \
> > -	fi
> > +	fi \
> >  @endif gcc-bootstrap
> > +	&& :
> >  
> >  .PHONY: all-build
> >  [+ FOR build_modules +]
> 
> This patch seems to fix the issue, and as such: OK to apply to GCC and
> src?

I'm OK with it.