Added tests for when mk_vector is out of memory. Can't rely on sc->sink.
Added tests for when mk_vector is out of memory. Can't rely on sc->sink.


git-svn-id: 4046496ac449cbd00d97751c78959f101e5fb0cf@30 4a0124f5-7288-4c88-8df5-efb20b5748ad

barak/tinyscheme,andresmusetti/tinyscheme,barak/tinyscheme,andresmusetti/tinyscheme