Portable trap conditions in run-test.sh.
The condition can be EXIT, 0 (equivalent to EXIT), or a signal specified using a symbolic name, without the SIG prefix, as listed in the tables of signal names in the <signal.h> header defined in the Base Definitions volume of IEEE Std 1003.1-2001, Chapter 13, Headers; for example, HUP, INT, QUIT, TERM. Implementations may permit names with the SIG prefix or ignore case in signal names as an extension.
Remove 'SIG' from trap conditions in run-test.sh for portability.
Discovered while running the tests locally. If the local shell doesn't support the
SIG prefix one gets a message along the lines of
trap: SIGINT: bad trap and the tests don't run.