In CVS, PEAR code is organized by package instead of hierarchical
like it would finally be installed. For example, if you want to
use the XML_RPC class, you include "XML/RPC.php". It's easy to
think that in CVS, this file should be in pear/XML/RPC.php, but
that's not the case. XML_RPC is an independent package with its
own directory in CVS, in this case the RPC.php file is actually
located at pear/XML_RPC/RPC.php. The package description file
(package.xml) is used to say where the files should finally be
installed.
The reason CVS is organized this way is that it makes package
administration much easier.
