* automake.in (file_contents_internal): if a rule is conditionally defined, define the standard automake definition for it for those conditions which are not conditionally defined. (invert_conditions): New function: invert a list of conditionals. * tests/cond14.test: New file. * tests/cond15.test: New file. * tests/Makefile.am (TESTS): Added cond14.test and cond15.test.