Reserve stack space on non-main threads for crash recovery on Windows

[HertzDevil]

LibC.SetThreadStackGuarantee only works on the current thread. This PR extends it to other threads created explicitly or via -Dpreview_mt, so that stack overflows on them will print a stack trace properly:

def foo
  x = uninitialized UInt8[512]
  foo
end

Thread.new { foo }.join

Stack overflow (e.g., infinite or very deep recursion)
[0x7ff79edc1fb7] foo at C:\Users\nicet\crystal\crystal\usr\test.cr:28
[0x7ff79edc1fbc] foo at C:\Users\nicet\crystal\crystal\usr\test.cr:28 (14843 times)
[0x7ff79edc1fa9] -> at C:\Users\nicet\crystal\crystal\usr\test.cr:31
[0x7ff79ee365c3] start at C:\Users\nicet\crystal\crystal\src\crystal\system\thread.cr:116
[0x7ff79ee36957] thread_proc at C:\Users\nicet\crystal\crystal\src\crystal\system\win32\thread.cr:30
[0x7ff79edc1fc9] -> at C:\Users\nicet\crystal\crystal\src\crystal\system\win32\thread.cr:15
[0x7ff79ee75766] GC_wait_marker +454 in C:\Users\nicet\crystal\crystal\test.exe
[0x7ff79ee75a7a] GC_call_with_stack_base +26 in C:\Users\nicet\crystal\crystal\test.exe
[0x7ff79eeacfd6] thread_start<unsigned int (__cdecl*)(void *),1> at minkernel\crts\ucrt\src\appcrt\startup\thread.cpp:97
[0x7fff3525257d] BaseThreadInitThunk +29 in C:\WINDOWS\System32\KERNEL32.DLL
[0x7fff3640aa58] RtlUserThreadStart +40 in C:\WINDOWS\SYSTEM32\ntdll.dll

[Fryguy]

For posterity, can you update the OP to show what the stack trace looked like before your change?

[HertzDevil]

Stack overflow (e.g., infinite or very deep recursion)
Stack overflow (e.g., infinite or very deep recursion)

[Fryguy]

Ah thanks...I thought it was more complicated than that 😆