[ros-svn] [ion] 20887: - Update KeContextToTrapFrame to support separate ContextFlags parameters in the scenario where we want to convert more then the Context's flag specify

[ion at svn.reactos.org]

- Update KeContextToTrapFrame to support separate ContextFlags parameters in the scenario where we want to convert more then the Context's flag specify
- Rename some of the internal FPU flags to external names and make them global.
- Improve context creation of new threads to initialize the virgin NPX state for new threads, to clear DR debug registers, to properly convert the context to a trap frame, to set the right segment registers, to set the debugging mark in the trap frame, and to properly set the initial eflags.
- Add stubs for upcoming support for extended/floating point registers in KeContextToTrapFrame and KeTrapFrameToContext.


Updated files:
trunk/reactos/include/ndk/asm.h
trunk/reactos/ntoskrnl/include/internal/ke.h
trunk/reactos/ntoskrnl/kd/wrappers/gdbstub.c
trunk/reactos/ntoskrnl/ke/exception.c
trunk/reactos/ntoskrnl/ke/i386/exp.c
trunk/reactos/ntoskrnl/ke/i386/fpu.c
trunk/reactos/ntoskrnl/ke/i386/kernel.c
trunk/reactos/ntoskrnl/ke/i386/thread.c
trunk/reactos/ntoskrnl/ps/debug.c