They were wrongly pointing to the original target once rewritten
instead of pointing to the proper target: the device.
This notably fixes opening the MountMgr device from user
mode (to perform IOCTL calls, for instance), and might
also fix various bugs dealing with global namespaces.
This might have some various effects in ReactOS~.
There is no need to compile our DLLs as shared libraries since we are
managing symbols exports and imports through spec files.
On my system, this reduces the configure-time by a factor of two.
- Simplify failure path for DeviceName query failure
- Don't make stable query failure fail the whole function call
Based on a patch by Vadim Galiant
CORE-15550
