I dont think, that we need set default pixel size, because here
http://www.freetype.org/freetype2/docs/reference/ft2-sizes_management.html is stated:

"When creating a new face object (e.g., with FT_New_Face), an FT_Size object is
automatically created and used to store all pixel-size dependent
information, available in the face->size field."
Update rendering font expectations, regenerate t/data/*.pgm
Update expected number of glyphs according to "ftdump" output;
the other expected values just update to actually emitted on my
host
Add simple metrics tests for otf-font format
Obtain text_heigh, ascender and descender font metrices the same
way as ftdump (from FT demo-utils package) does
Merge pull request #4 from basiliscos/master

Fix tests + enable text_heigh/ascender/descender font metrics.