Both were introduced in commit c55cb58a ("integrate guile-lib docs").
* doc/ref/Makefile.am ($(snarf_doc)scmfiles): Rename target to...
($(snarf_doc)-scmfiles): ... this. Change to generate a makefile
snippet containing a variable definition. Automake-include the
generated snippet, `standard-library.am'.
(EXTRA_DIST): Add `$(snarf_doc).am'.
(CLEANFILES): Remove `$(snarf_doc)scmfiles'.
* doc/ref/make-texinfo.scm: Remove executable bit and "#!/usr/bin/env".
* doc/ref/standard-library.am: New file.
