This updates Gnulib to v0.0-4951-g6ff7b70.
* m4/gnulib-cache.m4: Add floor, ceil, frexp, and ldexp. Add wchar as
an explicit dependency; it had been present as an indirect dependency
before, but no longer. Remove round, which I had requested earlier,
but turned out to be unnecessary.
This updates Gnulib to v0.0-4889-ge375fe3.
* m4/gnulib-cache.m4: Add `accept', `bind', `close', `connect',
`getpeername', `getsockname', `getsockopt', `listen', `malloc',
`malloca', `recv', `recvfrom', `send', `sendto', `setsockopt',
`shutdown', `socket', and `sockets', requested by
Jan Nieuwenhuizen <janneke-list@xs4all.nl> for cross-MinGW32 builds.
Add `trunc', requested by Mark H Weaver <mhw@netris.org>.
