net-misc/openssh: Add a workaround to HPN for the OSX threading implemntation

net-misc/openssh: Add a workaround to HPN for the OSX threading implemntation

The MT AES-CTR has a section of code that compares the currently running thread's
thread id with the first thread created. It seems on OSX, the first thread will
sometimes run before the thread ID is filled in (hence is zero), so this test
will fail, and the initialization code does not get run. This makes the test
also check if the thread ID of the first thread is 0, and run the initialization
code in that case as well.

Package-Manager: portage-2.3.0