* m4/gnulib-cache.m4: Use `dirfd'.
* libguile/filesys.c: Include Gnulib's <dirent.h> directly.
(dirfd): Remove. Suggested by Bruno Haible <bruno@clisp.org>.
From Gnulib v0.0-4889-ge375fe3.
* m4/gnulib-cache.m4: Add `log1p' and `round', requested by
Mark H Weaver <mhw@netris.org>.
Use `malloc-gnu' instead of `malloc', the latter being obsolete.