[PATCH] Add FreeBSD support to the address sanitizer's deep_call_stack.cc test case

[Viktor Kutuzov]

Further investigation indicates that the problem is the main thread stack size and not the system stack size.

According to the discussion at:

<http://freebsd.1045724.n5.nabble.com/libthr-and-main-thread-stack-size-td5935621.html>

the main thread stack size is set to 4M on x86-64 and cannot be changed. For i386 it is half of that value.

What if we reduce the depth of the recursion for all platforms and add 'ulimit -s 4096' to the run lines?

http://reviews.llvm.org/D4562