K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2016-03-09T19:05:11.753275Z
K 7
svn:log
V 625
Simplify AIO initialization now that it is standard.

- Mark AIO system calls as STD and remove the helpers to dynamically
  register them.
- Use COMPAT6 for the old system calls with the older sigevent instead of
  an 'o' prefix.
- Simplify the POSIX configuration to note that AIO is always available.
- Handle AIO in the default VOP_PATHCONF instead of special casing it in
  the pathconf() system call.  fpathconf() is still hackish.
- Remove freebsd32_aio_cancel() as it just called the native one directly.

Reviewed by:	kib
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D5589

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