Log Message:
The PT in the font family name is not about the ParaType itself,
but rather stating that it's a Public Types [of Russian Federation].
The ParaType blog also mentions the family as PT Project. Thus,
rename pt-cyrillic-ttf to pt-ttf to reflect the change.

During rename process downgrade PT Sans version to 2.004 - the 2.005
wasn't announced on ParaType blog, yet it known as causing problems.