Fix build csproj somehow not committed previously

Project files didn't reflect the following renaming:
TypeSerializer2Tests.cs to DefaultTranscoderTests.cs (NCBC-739)

Additionnaly, in-changeset name modification was also not correctly
reflected in the csproj (bad patch-set), leading to having the class
ClusterInfo.cs wrongly referenced as CouchbaseClusterInfo.cs (NCBC-480)

Fixed the csproj files for these mistakes.

Change-Id: If9a2047e59ed1e898cc1ec79d41db2563f83ff29
Reviewed-on: http://review.couchbase.org/44377
Tested-by: Simon Baslé <simon@couchbase.com>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>