Add stub for txtheap-dump program with integration into Makefile.am and .gitignore.
Factor the binary file reading logic into a class in anticipation of adding another parser for the heap.
Add new parser class for the public TXT config registers and the bits necessary to find the heap.  Add initial class for interacting with the heap.
Add a parameter to allow caller to specify a file containing the heap, or fall back on /dev/mem.  Add logic to set up the public config register object.
Use single quotes.
Remove bad error message, not adding mmap logic till it's necessary.
Include pythondir automake variable in PYTHONPATH programatically.  Makes handling Debian (site|dist)-packages stuff manageable.