misc: Fix tst-select timeout handling (BZ#27648)
Instead of polling the stderr, create two pipes and fork to check if child timeout as expected similar to tst-pselect.c. Also lower the timeout value. Checked on x86_64-linux-gnu.
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Instead of polling the stderr, create two pipes and fork to check if child timeout as expected similar to tst-pselect.c. Also lower the timeout value. Checked on x86_64-linux-gnu.