Clone hss1394 VS2008 solution to a VS2013 folder.
Add VS2013 HSS1394 solution.

* Set common properties (v120_xp, subsystem 5.01/5.02), reset output paths, etc.
* Add build script for hss1394.
* Switch to /MD and /MDd for both static and DLL projects.
* Define _WIN32_ and HSS1394_EXPORT_DLL.
Add opusfile-0.6 and opus-1.1.
Add VS2013 solutions for opus and opusfile.

* Common flags (v120_xp, subsystem 5.01/5.02, etc.)
* MD/MDd despite building a static library!
* Add build script.
Define _WIN32_ in HSS1394 headers.
Copy taglib_config.h.