Do not ignore config.*, but be more explicite.

[[Imported from SVN: r7361]]

.gitignore

 Makefile
 Makefile.in
-config.*
+config.guess  
+config.h.in   
+config.log  
+config.status
+config.h      
+config.lt   
+config.sub
+configure
 configure
 aclocal.m4
 autom4te.cache
@@ -19,3 +26,7 @@ ltmain.sh
 .libs
 dependencies.m4
 dune.css
+config.h.in
+config.h
+config.log
+config.guess

cmake/modules/DuneMacros.cmake

@@ -499,6 +499,9 @@ macro(dune_regenerate_config_cmake)
    from the config.h.cmake files of modules this module depends on. */"
    )
 
+ # define that we found this module
+ set(${DUNE_MOD_NAME}_FOUND 1)
+
  foreach(_dep ${DUNE_MOD_NAME} ${ALL_DEPENDENCIES})
    dune_module_to_uppercase(upper ${_dep})
    set(HAVE_${upper} ${${_dep}_FOUND})