2017-12-17  David Anderson
     * dwarfgen.1: The options to dwarfgen are now documented.
2017-10-20  David Anderson
     * createirepformfrombinary.cc,irepattrtodbg.cc, irepform.h,
       ireptodbg.cc: Added support for DW_FORM_data16.
2017-10-15  David Anderson
     * dwarfgen.cc,general.h,ireptodbg.cc: Moved global 
       command-line options
       into a single global struct to clarify their use for
       a reader of the code. See 'cmdoptions'.
2017-08-21  David Anderson
     * config.h.in: Adding HAVE_LIBELF_LIBELF for consistency.
     * createirepformfrombinary.cc,createirepfrombinary.cc,
       irepattrtodbg.cc,ireptodbg.cc:
       Add ifdef HAVE_UNISTD_H.
     * dwarfgen.cc:
       Add ifdef HAVE_UNISTD_H, HAVE_LIBELF_LIBELF_H.
       Improve #ifdefs for Windows builds.
2017-04-21  David Anderson
     * dwarfgen.cc: Now supports -v with 2,3,4, or 5.
2017-04-20  David Anderson
     * dwarfgen.cc: Use dwoptarg. Not optarg. oops.
2017-04-20  David Anderson
     * dwarfgen.cc: Added new options allowing 
       specification of the desired dwarf version.