[KERNEL32]

[KERNEL32]
Merge r34770, r36475, r36990, r37019, r43852, r43952, r43954, r43979, r43981, r46868 from amd64 branch:
- Multiple ULONG / SIZE_T fixes
- Use UlongToHandle / HandleToUlong to convert between DWORD ProcessId and ClientId.UniqueProcess
- implement amd64 version of _dump_context
- Make IsConsoleHandle 64bit safe
- Update kernel32.pspec with a lot of Win7 (commented out) and some amd64 specific exports, add some more comments and fix sorting
- Implement amd64 version of BaseThreadStartupThunk and BaseProcessStartThunk
- Stub amd64 version of SwitchToFiber
- Implement amd64 version of BasepInitializeContext

svn path=/trunk/; revision=48119