Update code so that when application is used from the command line, a
directory is created for each TIFF image (previously non-tiled images were
not put in their own directories) and a text file is created containing the
image description text for that image. Per CP-405.
Refactored code to auto-detect the slide type. If TIFF file is not a
recognized type, it will be processed generically.  Currently only Philips
TIFF files are recognized.
Update PhilipsSlideDataFactory to retrieve the magnification (of level zero)
from a Philips TIFF file. Changed the type of SlideSER member 'magnification'
from int to double.