Defect in XBD pthread.h

[Geoff Clare <yyy@xxxxxxxxxxxxx>]

@ page 290 line 10245-10257 section pthread.h objection [gwc pthread.h shading]

Problem:

Defect code :  1. Error

On the pthread.h page the PTHREAD_PROCESS_SHARED and
PTHREAD_PROCESS_PRIVATE constants have no option shading.
However, all of the functions that use these constants have
either a TSH shading (pthread_*_getpshared() and
pthread_*_setpshared()) or SPI shading (pthread_spin_init()).

Likewise the PTHREAD_EXPLICIT_SCHED and PTHREAD_INHERIT_SCHED
constants have no shading, but the functions that use them
(pthread_attr_setinheritsched() and pthread_attr_getinheritsched())
have TPS shading.

It would appear that leaving these constants unshaded was probably
an oversight.

Action:

Add TPS shading to the PTHREAD_EXPLICIT_SCHED and
PTHREAD_INHERIT_SCHED constants (lines 10245 and 10256).

Add TSH|SPI shading to the PTHREAD_PROCESS_SHARED and
PTHREAD_PROCESS_PRIVATE constants (lines 10256 and 10257).