stripped basic TTF font test

--HG--
rename : fpdf/ttfonts.py => tests/ttfonts.py
fixed ttf char width allocation (list) and test
converted TTF fonts module to py3k:
 * decode table names
 * replace ord (bytes)
 * b to convert to bytes (simulates b prefix)
 * rounding up 0.5
 * minor adjustment to unpack
fixed ttf unicode font support for py3k
added test images from Pillow for py3k test, and minor changes