nested includes

[David Byron]

I'm looking for a structure like this to work:

src/Makefile.am
---------------
include foo/frag1.mk

src/foo/frag1.mk
----------------
include frag2.mk

src/foo/frag2.mk
----------------
some stuff

But at the moment (automake 1.11.1) the notion of current directory when
processing foo/frag2.mk isn't foo.  I believe it's src.  I came across this:

http://thread.gmane.org/gmane.comp.sysutils.automake.patches/3230

Was anything like this ever committed?  Can I help if not?

Thanks much for your help.

-DB