Remove RTC switch from configure.cmd, now MSVC runtime checks are
supposed to be enabled/disabled via CMake define (-DRUNTIME_CHECKS=1)
Prepare for adding more dynamic analysis options
which implements the required functionality.
ntdll and ntoskrnl now have a wrapper for this, with SEH.
This protects the function against malformed / bad images,
whilst still being able to use the code in freeldr et al.
Idea from Thomas.
CORE-14857
[ROSLOAD]: Implement OslExecuteTransition, OslArchKernelSetup,
ArchRestoreProcessorFeatures, OslArchTransferToKernel.
[ROSLOAD]: Factor out the logo code. Clean ups.
