use explit rouding function

Usage of integer pragma returns invalid results for large number, on 32-bits windows
skip tests based on command output parsing

Reading an external command output with open() doesn't work on Windows, whatever the exact syntax used.
drop wildcard certificate test

Since version 1.976, IO::Socket::SSL reject wildcards for TLD, unless
SSL_verifycn_publicsuffix is disabled, rejecting our *.localdomain test
certificate.

see-also: #2483
Closes #2491: Use etime instead of stime on UNIX to prevent erratic STARTED value if no /proc filesystem is available
regenerate samples using new output format
drop linux-specific PID-based runtime retrieval