Rewrite the test suite to run Octave-style built-in tests * Makefile.am (M_FILES): New declaration. (TST_FILES): New derived declaration. (%.cc-tst): New rule to generate test scripts from compiled sources. (check-local): Call __py_tests__.m script file to run test suite. (CLEANFILES): Include fntests.log and *-tst. * __py_tests__.m: New script file to run built-in tests. * .hgignore: Include fntests.log and *.cc-tst.