Make build non-recursive

Make build non-recursive

Unify all the different Makefile.am into a single short top level one
(the test/Makefile.am file is left intact though).

This makes the build system simpler to look and should encourage
unifying more currently-disparate code.

Some further motivation can be found in this page:
http://www.flameeyes.eu/autotools-mythbuster/automake/nonrecursive.html

Signed-off-by: Ran Benita <ran234@gmail.com>