This monster commit was created by applying Nikhil's scripts
`docconverter.py' and `markify.py' to all C header and source files,
followed up by minor manual clean-up.
No change in functionality, of course.
I used commit f7419907bc6044b9b7057f9789866426c804ba82 from
https://github.com/nikramakrishnan/freetype-docs.git.
src/type42/t42parse.h, src/type42/t42objs.h, src/type42/t42objs.c,
src/type42/type42.c:
updated the Type42 driver by splitting it into several files since
it makes the code easier to read and maintain. Also fixed the bug
that prevented the correct display of fonts with "ftview"