added missing whitespace after CMakeLists.txt

[[Imported from SVN: r1788]]

Makefile.am

 # $Id$
 
 # we need the module file to be able to build via dunecontrol
-EXTRA_DIST= CMakeLists.txtdune.module
+EXTRA_DIST= CMakeLists.txt dune.module
 
 # don't follow the full GNU-standard
 # we need automake 1.9 or newer