0.943 Distributed P2P WAN DB by nanobit

First, the GPU organization thanks Laurent Wattieaux ( http://www.lwm-media.org )
for mantaining an own FTP server where occasional users can upload the Terragen images
computed by the GPU network.

After the file distributor, a new paradigm ideated and implemented by nanobit (René Tegel)
enters into the GPU arena. Technically implemented as two new plugins called pwansrw.dll and gpu2pwandb.dll,
the P2P WAN database uses environment variables, which can be synchronized between 2 nodes or the entire network by using hashes.
The paradigm is powerful and could be used to exchange results of computations between nodes without having any loss of data.
The distributed P2P WAN DB is described in the document pwandb_paper.odt.doc, to be found in the docs folder.

Several other improvements followed the release of 0.938.
- 0.939 introduced user management into the File Distributor (user statistics are planned in a future release).
- 0.940 introduced XML messages for netmapper. Due to the switch, version prior to 0.940 cannot see each other and vice versa.
This lead also to a simplification of the code.
- 0.941 was released only on autoupdate, its purpose being to stabilize the distributed P2P WAN DB plugin, which
was crashing on some platforms
- 0.942 introduced the Distributed P2P WAN DB by nanobit
- 0.943 has a new screensaver with zooming and autoupdate information, fixes for the Vista and Linux Wine platform,
and meanings to update the lite version to a full version.

The project finally sketched a roadmap, which can be found at http://gpu.sourceforge.net/roadmap.php

As usual, we thank all people who sustain the network by running the GPU client and who feed us with new ideas and source code.