cobiaRegister /u reports ok for PMCs that are not registered

[jasper]

This is not a bug, it was designed this way. After /u, it reports ok if the PMC is not registered.

But perhaps this is not the best design - should we raise "not found" in this case?

[jasper]

• when unregistering a DLL, there could be multiple PMCs, so "Not found" is not straight forward unless none of them are found

• when unregistering a PMC COBIA actually unregisters a particular service of the PMC, e.g. native x86 or native x64. Only after removing the last service, the entire PMC registration is removed

• unregistration can also be invoked for a particular CLSID. In this case querying whether it exists can be done separately using cobiaRegister /i.

Considering all of this, a "not found" is perhaps confusing as well.

The issue is closed until a business case arises.