Make TIFFTAG_CFAPATTERN variable count
The TIFFTAG_CFAPATTERN tag (33422) from TIFF/EP, recently introduced in libtiff 3363eda0 / http://bugzilla.maptools.org/show_bug.cgi?id=2457 is described as having a fixed count of 4. But the TIFF/EP spec says this should support a variable count (= CFARepeatRows * CFARepeatCols):
TIFF/EP, ISO 12234-2:2001 http://www.barrypearson.co.uk/top2009/downloads/TAG2000-22_DIS12234-2.pdf page 18 and 26
closes #58 (closed)