syscalls/pselect01: Convert to the new API

* Convert to the new library API

* Make use of tst_timer.h

* The "read from file" test has been moved to pselect03.c

* Speed up the test, now takes ~1.5s previously ~11s

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
5 files changed