Code needed to compile schemas so they can be embeeded into the binary.

According to the xsd example in xsd/examples/cxx/tree/embedded/

xsdbin.cxx
  Tool for converting one or more XML Schema files to the compressed binary
  representation. The output is written as a pair of C++ source files 
  containing the array with the binary data. Use the --help option to see
  the tool's usage information.

library-schema.hxx
library-schema.cxx
  Binary representation of the library.xsd schema. These files are generated
  by the xsdbin tool.

grammar-input-stream.hxx
grammar-input-stream.cxx
  Input stream implementation with the special-purpose schema grammar 
  decompression algorithm. It is used to load the binary schema representation
  produced by the xsdbin tool.
