Fix XbSymbolDatabase Versioning for Manual Scan Changes

[RadWolfie]

Since XbSymbolDatabase_LibraryVersion only return hashed value from list of OOVPA signatures. We also need to add support for manual scan method. Since it can affect symbol cache not being accurate for Cxbx-Reloaded.

Two possible solutions I can think of is add compile time timestamp. Going with this way will cause Cxbx-Reloaded to regenerate symbol cache for any builds.

The other possible is manually update variable by hand.

[RadWolfie]

I think this ticket may can be resolved by pull request #149.

Although, currently undetermine at the moment if going to migrate variable references without OV pairs into library DB's list.

[RadWolfie]

All symbols will be migrate into their respective library database. And will likely be resolved by #208 pull request.