array: Check for integer overflow during allocation

This fixes #229, where creating a new array can cause array to allocate
a smaller array than it thinks it allocates due to integer overflow,
resulting in memory unsafety.

This breaks the rts/overflow1 test, which relied on this unchecked
overflow. I fix it by reimplementing the test in terms of newByteArray#
directly.

Updates the array submodule.

1 files changed, 0 insertions, 0 deletions

diff --git a/libraries/array b/libraries/array
-Subproject bab2c234f176fe3e95443cbe4387833da22f7e5
+Subproject b8a8d09ddc20a9c9d99bd03b136718b543edb87