Avoid possible SEGVs in select() (in unit tests)
Per the POSIX definition of select():
http://pubs.opengroup.org/onlinepubs/
009696699/functions/pselect.html
"Upon successful completion, the select() function may modify the object
pointed to by the timout argument."
If "struct timeval" pointer is a "static const", it could potentially
be allocated in a RO text segment. The kernel would then try to copy
back the modified value (with the time remaining) into a read-only
address and SEGV.
Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
Closes: #614