K 10
svn:author
V 8
vangyzen
K 8
svn:date
V 27
2016-12-03T01:14:21.453103Z
K 7
svn:log
V 511
thr_set_name(): silently truncate the given name as needed

Instead of failing with ENAMETOOLONG, which is swallowed by
pthread_set_name_np() anyway, truncate the given name to MAXCOMLEN+1
bytes.  This is more likely what the user wants, and saves the
caller from truncating it before the call (which was the only
recourse).

Polish pthread_set_name_np(3) and add a .Xr to thr_set_name(2)
so the user might find the documentation for this behavior.

Reviewed by:	jilles
MFC after:	3 days
Sponsored by:	Dell EMC

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