(with one small bugfix in bgen/bgen/scantools.py)
This replaces string module functions with string methods
for the stuff in the Tools directory. Several uses of
string.letters etc. are still remaining.
will compare equal even if the master file uses only \n to terminate
lines (this is by far the most common situation). Also, check for the
case where the master file is missing, and print the time difference
in seconds when the slave file appears newer than the master (for
debugging).