libogg library version 1.3.5 (2021-06-04).
The following changes have been made:
- Obviously, unnecessary folders and files (documentation, makefiles, etc.) have
  been removed.
- win32/ogg.def has been modified to not override the linker library name.
- For building, premake is used to generate Visual Studio project files.
  See ../build/premake/ for details.
