8190703: TestSystemGCWith* infrequently times out on SPARC
Summary: Give the test a timeout after which it ends on its own.
Reviewed-by: shade, sjohanss
^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt