[KERNEL32/NTDLL]: Fix definition of RtlCreateActivationContext (although the code...

[KERNEL32/NTDLL]: Fix definition of RtlCreateActivationContext (although the code is still 100% incompatible with Windows, at least it won't destroy the stack anymore when Windows' kernel32.dll tries to call it). Take the Windows definition of ACTIVATION_CONTEXT and use it instead. Also do the Windows behavior of allocating an ACTIVATION_CONTEXT_WRAPPED structure (which has a magic header), and returning the internal ACTIVATION_CONTEXT (and then looking up the "WRAPPED" whenever we need to check the magic). Ran kernel32:actctx and no regressions seen. My hope is to get the Rtl* interfaces at least compatible enough to Kernel32 from Windows so that when using it in ROS, it doesn't immediately crash and burn, we'll see how far that goes. I don't want to rewrite 2500 lines of XML parsing.

svn path=/trunk/; revision=60086