ViennaCL 1.0.4 released!

The new version 1.0.4 is now ready for download. The main changes over 1.0.3 are:
* All tutorials now work out-of the box with Visual Studio 2008 and produce no ViennaCL-related warnings.
* Better (experimental) support for double precision on ATI GPUs, but no norm_1, norm_2, norm_inf and index_norm_inf functions using ATI Stream SDK on GPUs in double precision.
* Fixed a bug in GMRES that caused segmentation faults under Windows.
* Fixed a bug in const_sparse_matrix_adapter (thanks to Abhinav Golas and Nico Galoppo for almost simultaneous emails on that)
* Corrected incorrect return values in the sparse matrix regression test suite (thanks to Klaus Schnass for the hint)