October 06, 2011
    The -x abi=mips  frame register abi in dwarfdump.conf is now
    usable with modern MIPS objects as well as old IRIX objects.
    There are other mips-* frame register setups described
    in dwarfdump.conf for anyone testing that nothing new has
    been added that conflicts with old IRIX/MIPS frame generation.
October 04, 2011
    Revised in major ways to do the additional checks and produce the same
    output as dwarfdump.  But making use of C++ features.
March 29, 2011
    All indentations changed to a consistent 4 characters per level.
    This was a massive but simple change.
January 26, 2010
    Changed the default frame-data register names from MIPS to
    a generic set of registers.  
    Try  '-x abi=mips' to get the traditional old MIPS register
    naming.
June 22, 2009
    Added the -S option to dwarfdump.
June 10, 2009
    Moved the gennames.c code to libdwarf.
May 4, 2009
    Replaced awk source-generation of certain functions 
    with new gennames.c code.
April 04, 2009
    Now frame printing (-f and -F) uses a different interface
    to libdwarf which is far more efficient for the particular
    purpose of printing all the register rules.  Reduces
    MxN print time to M (one extreme case reduces from 2 hours
    to 2 minutes).
Feb 28, 2009
    Created this new source base in C++ (from dwarfdump, which
    is C).
