Build system cleanup [4/n]

[Kelley Cook]

Benjamin Kosnik wrote:

>However:
>
>+ACLOCAL_AMFLAGS = -I . -I .. -I ../config
>
>Should be just
>
>+ACLOCAL_AMFLAGS = -I . -I .. 
>
>  
>
It was to pick up

-m4_include([../config/no-executables.m4])

which is GCC_NO_EXECUTABLES in configure.ac