@rtiangha: Used to be Qt 4.x, is now 5.2. They kept the filenames as-is to make updates less painful (since it's basically a tarball with no scripting capabilities, so migrating folders & filenames was not easily doable post-install).
FWIW, wonky stem heights is typical of FT autohinting going awry, so, it all tracks
. You'd get "fuzzier" rendering if truly unhinted, but with "perfect" (as in, honoring the font's design) shapes. The higher the DPI, the sharper the rendering. Plus, eInk has a tendency to make that fuzziness much less noticeable than on LCD to begin with.