K 10
svn:author
V 6
jilles
K 8
svn:date
V 27
2010-05-07T20:46:22.096791Z
K 7
svn:log
V 231
sigprocmask(2): pthread_sigmask(3) must be used in threaded processes.
Although libthr's pthread_sigmask() just calls sigprocmask() and this is
unlikely to change, mention this POSIX requirement on applications.

MFC after:	1 week

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