Added arduino-nano to BOARD_INSUFFICIENT_MEMORY/BOARD_BLACKLIST following suit
of how arduino-uno is marked, as arduino-nano is mostly an Uno in a different
form factor.
Stack size is changed from 4 times the default + printf to 5 times the
default stack size. Only on the lpc2387 this reduces the resulting stack
space. the test is not rerun for the lpc2387 and is untested.
