Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53741
-- v2: ntdll: Implement RtlSetUserFlagsHeap. ntdll: Check block user flags in RtlGetUserInfoHeap. ntdll: Check block user flags in RtlSetUserValueHeap. ntdll: Store the user flags in the heap block flags. ntdll: Introduce a new heap block_set_flags helper. kernel32/tests: Test (Global|Local)Handle with heap allocated pointers. kernel32/tests: Test more Global/Local functions with invalid pointers.