[project @ 1999-11-25 16:54:14 by simonmar]

Incremental cleanups & improvements to the I/O subsystem

- Initial fix for problems caused by partial writes
  to non-blocking file descriptors.  To see this bug,
  run ghc/tests/programs/life_space_leak through a pipe.

- remove FILEOBJ_FLUSH, it allegedly has the same meaning
  as FILEOBJ_WRITE.  This fixes a buf in openFd: it erroneously didn't
  set FILEOBJ_FLUSH on writeable file descriptors.

- some ANSIfication