The source distribution contains infinispan-cpp-client folder contains sources for infinispan-hotrod-cpp-6.2.0.ER1. The version should be 6.2.1.ER1, IMO.
Also, the source distribution contains documentation folder with files that point to community Infinispan 6.0. There are several references of this kind. Maybe they could be tackled as part of this BZ as well.
Re-assinging as it's a productization specific script.
The infinispan-cpp-client folder should be removed from the source distribution altogether. It is needed for the prod build but useless otherwise.
In ER2 there is no infinispan-cpp-client directory
I've been looking at the links you mentioned... Here is an example from CPP client: documentation/index.adoc:link:http://infinispan.org/docs/6.0.x/contributing/contributing.html#_source_control[Contributing Guide] Unfortunately the link with 6.2.x does not exist (http://infinispan.org/docs/6.2.x/contributing/contributing.html#_source_control) I'm afraid we need to leave those links as is.
After having a small chat with David Stahl it turned out that this happened after some problems with releasing. It shouldn't happen in the following releases. I suggest closing it.