Since these tags might be confusing, added a note that these are not
part of the normal protocol buffers syntax. I also linked to the main
tutorials page that uses these examples
https://developers.google.com/protocol-buffers/docs/tutorials so that
anyone who arrived here without going through that info first can get
more explanation if they want.
To my surprise, executing generate_protos.sh used the version of Bash installed with Git for Windows by default.
After a few modifications to detect the most appropriate protoc to use, this worked pretty simply.
This change also:
- adds generation of the address book tutorial proto,
- fixes the addressbook.proto to specify proto2 explicitly (to avoid a warning from protoc; I don't think we want warnings...)
- fixes the addressbook.proto C# namespace (which I thought I'd done before, but apparently hadn't)
- includes the regenerated UnittestCustomOptions.cs apart from the DescriptorProtoFIle => Descriptor change
