Switched to GlobalAssemblyInfo.cs for AssemblyVersion attributes.

All projects under the src folder containing a Properties\AssemblyInfo.cs file now reference src\GlobalAssemblyInfo.cs in order to set their AssemblyVersion attributes, allowing this to be centrally managed. Other common attributes could be moved to this file as well in the future.

Changes were committed this time with autocrlf set to false (against a fresh fork), so no unintended line ending changes should be present in this commit.