Defect in XSH 2.3 ENOTSUP

[Geoff Clare <gwc@xxxxxxxxxxxxx>]

@ page 482 line 16430 section 2.3 objection [gwc ENOTSUP desc]

Problem:

Edition of Specification (Year): 2008

Defect code :  1. Error

The general ENOTSUP description in 2.3 does not match its uses on
individual function pages.  For example clock_nanosleep() uses
it to indicate a clock ID is not supported; mmap() to indicate
certain flags are not supported; mprotect() to indicate an
access combination is not supported; and numerous pthread_*set*()
functions use it to indicate that a requested value is not
supported.

Also most uses of ENOTSUP do not have XSI shading, so describing
it in terms of an XSI feature group is wrong.

Action:

Change

    "The implementation does not support this feature of the Realtime
    Option Group."

to

    "The implementation does not support the requested feature or value."