tests/run-tests: Support for strict mode tests.
tests/run-tests: Support for strict mode tests.

For unix port, run strict mode tests from tests/strict/, treat as special
(regex matching).

Regex matching required for pycopy vs pycopy-dev differences in warnings
reporting.

Change-Id: I261edec631c3ecd169ef780011fcbc511396b6f9
Signed-off-by: Paul Sokolovsky <9dc5061f178bb11813e14f1ed02ba27eaf21fa5d@users.sourceforge.net>

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython