Deprecate msvc2003 with v0.26
Time to say goodbye to the msvc2003 build environment. The release notes should state that v0.26 will be the final version of Exiv2 in which support will be provided for Visual Studio .Net 2003
The msvc2003 build environment builds 32bit build (DLL and static) versions of exiv2. Users should upgrade to a more modern version of Visual Studio. We support (and build nightly) on 2005/8/10/12/13/15 in 64 bits. Users can build 32 bit libraries with those compilers.
The directory msvc2003 should be removed from the trunk early in the v0.27 development project. If anybody notices/complains the decision to deprecate can be discussed.