Get rid of BaseThreadStartupThunk and BaseProcessStartThunk asm wrappers and go to the C functions directly (home space is allocated on the stack by the kernel)
- kernel32!BaseCreateStack() is compatible with ntdll!RtlpCreateUserStack().
- When checking whether a stack guard page can be added, its size has to
be accounted for in the checking logic.
- We have to satisfy the PEB::MinimumStackCommit constraint.
- We cannot use PEB::GuaranteedStackBytes in BaseCreateStack() since it is
nowhere initialized (default is 0). It gets initialized to a non-zero
value when the user manually calls SetThreadStackGuarantee().
https://www.installsetupconfig.com/win32programming/windowsthreadsprocessapis7_6.html
- RtlpCreateUserStack(): Fix memory leak in failure case.
- RtlpFreeUserStack() doesn't need to return anything.
See also commit 1bc59379 (r59868).
CORE-11319
