- Fix some coverity errors.

- Use KeBugCheck(MEMORY_MANAGEMENT) instead of ASSERT(FALSE), so it dies on release builds too.
- Enable support for Hyper-V.
- Fix incorrect gate wait code -- fixes sporadic crashes in the network stack.
- Mark KeBugCheck*, ExRaise* and RtlRaiseStatus as declspec(noreturn), for better optimization of functions which call them, less potential warnings in the compiler, and, assuming coverity understands it, less false CIDs.
- Fix KiUpdateDr7, which resulted in broken support for hardware breakpoints.
- Fix failure cases in EnumerateRootDevices which might've freed non-allocated memory.
- Fix NtAddAtom/NtFindAtom logic when dealing with NULL or kernel Atom names.

Patch by Alex Ionescu.

svn path=/trunk/; revision=37668

reactos/include/ddk/winddk.h

@@ -7666,12 +7666,14 @@ ExNotifyCallback(
 NTKERNELAPI
 VOID
 NTAPI
+__declspec(noreturn)
 ExRaiseAccessViolation(
   VOID);
 
 NTKERNELAPI
 VOID
 NTAPI
+__declspec(noreturn)
 ExRaiseDatatypeMisalignment(
   VOID);
 
@@ -7679,6 +7681,7 @@ DECLSPEC_NORETURN
 NTKERNELAPI
 VOID
 NTAPI
+__declspec(noreturn)
 ExRaiseStatus(
   IN NTSTATUS  Status);
 
@@ -9603,12 +9606,14 @@ KeAreApcsDisabled(
 NTKERNELAPI
 VOID
 NTAPI
+__declspec(noreturn)
 KeBugCheck(
   IN ULONG  BugCheckCode);
 
 NTKERNELAPI
 VOID
 NTAPI
+__declspec(noreturn)
 KeBugCheckEx(
   IN ULONG  BugCheckCode,
   IN ULONG_PTR  BugCheckParameter1,

reactos/include/ndk/rtlfuncs.h

@@ -431,6 +431,7 @@ RtlRaiseException(
 NTSYSAPI
 VOID
 NTAPI
+__declspec(noreturn)
 RtlRaiseStatus(
     IN NTSTATUS Status
 );