build: Avoid triggering rebuild of docs when DOCSTRINGS regenerated (bug #45567) * doc/module.mk: Make generated files depend on $(DOCSTRING_FILES) again. (DOCSTRING_FILES) Delete, initialized elsewhere now. (DOCSTRING_DEPS) Delete, no longer used. * Makefile.am (DOCSTRING_FILES): Initialize to empty. * libinterp/module.mk (DOCSTRING_FILES): Include libinterp/DOCSTRINGS in the list. (libinterp/DOCSTRINGS): New target with an order-only dependency on libinterp/.DOCSTRINGS. * scripts/module.mk (DOCSTRING_FILES): Include scripts/DOCSTRINGS in the list. (scripts/DOCSTRINGS): New target with an order-only dependency on scripts/.DOCSTRINGS.

--- a/Makefile.am	Fri Jul 24 19:58:18 2015 -0400
+++ b/Makefile.am	Sat Jul 25 14:55:03 2015 -0400
@@ -86,6 +86,7 @@
 PKG_ADD_FILES =
 SCRIPTS_IMAGES =
 JAR_FILES =
+DOCSTRING_FILES =
 
 bin_PROGRAMS =
 archlib_PROGRAMS =