- add new modules (zipimport, datetime, _random, bz2, _symtable)
 - build pyexpat with expat sources from Python distribution
 - regression test with and without compiled bytecode

 - the security fixes to tempfile have lead to test_tempfile wanting
   to create 100 temporary files.  as the EMX default is only 40,
   the number of file handles has been bumped (up to 250).
 - changes to pgen have required restructuring its build support.

  PC/os2emx/
    Makefile
    README.os2emx
    config.c
    dlfcn.c            // libdl emulation code for loadable extensions
    dlfcn.h
    dllentry.c         // DLL initialisation routine for Python DLL
    getpath.c
    pyconfig.h
    python23.def       // Python DLL symbol export definitions
    pythonpm.c         // console-less PM interpreter wrapper