Moved Makefile.decl to build sub directory and created a Makefile.am.lm All Makefile's should include the new Makefile.am.lm which in turns includes common and test Makefiles.

Colin Walters
Frederic Crozat
Josh Beam
Martyn Russell
Richard Hult
Ross Burton
Sjoerd Simons
Tim Robbins
Tollef Fog Heen