os: API

[rsc]

Delete Time; callers should use time.Time.

Change NewFile to take a uintptr; change File.Fd to return one.  This accommodates
Windows safely without having to define a syscall.Handle type on Unix.

Delete O_NDELAY, O_NONBLOCK, O_NOCTTY, O_ASYNC.
People can import syscall for those very system-specific ones.
Maybe delete some error constants (ENXIO,...).

Doc for Environ: s/array/copy/ (it's a slice, but get across that it's not the real
thing either).

Delete Exec, which is a trivial wrapper around syscall.Exec, cannot be implemented on
Windows, and does not work on OS X?  (On OS X, only single-threaded programs can use
exec.)

Doc for ShellExpand: s/operating system's/current/ (as in current process, current
program).
Rename ShellExpand -> ExpandEnv.  Shell implies other expansions that are not being
done
(like globbing).

Doc for Stat: delete talk about FollowedSymlink.

[bradfitz]

Comment 1:

Time removed in http://code.google.com/p/go/source/detail?r=89bf6c7e5

[bradfitz]

Comment 2:

Owner changed to @bradfitz.

Status changed to Started.

[bradfitz]

Comment 3:

This issue was closed by revision 4152b43.

Status changed to Fixed.