* CONTRIBUTE: Ask contributors to test out-of-tree builds when
making build system changes.
the "test/" directory, run "make <filename>" to run the tests for
<filename>.el(c). See "test/README" for more information.
+If you're making changes that involve the Emacs build system, please
+test 'out-of-tree' builds as well, i.e.:
+
+ mkdir emacs-build
+ cd emacs-build
+ ../path-to-emacs-sources/configure
+ make
+
** Commit messages
Ordinarily, a change you commit should contain a log entry in its