- Define `USE_IMAGEMAGICK` and `USE_BLACKMAGIC` unconditionally when
building docs, so that the classes will be documented.
- Improve handling of `std::`-prefixed types in doxygen output.
Also include the documentation MarkDown pages in the Doxygen docs.
These will show up as Related Pages in the interface.
* The formatting of `INSTALL-*.md` had to be changed some:
- Doxygen doesn't support headings in bulleted lists (lines starting
with `* ###`) -- I'm not even sure that's legal markdown. They were
changed to just level 3 headings (lines starting with `###`).
- ALL Windows paths in `INSTALL-WINDOWS.md` were wrapped in backticks,
to prevent Doxygen parsing them as markup commands.
- Level 1 headings were added to the top of the three install docs,
giving them the title "Building libopenshot for ___(OS)___".
Otherwise all three pages were titled "Getting Started".
* Separately, the table at the top of `HW-ACCEL.md` does not
translate well to Doxygen. It will need further polishing. But the
docs are all quite readable now.
The source has been reorganized since the doxygen configs
were last updated; there are more examples that should be
excluded, and they're all now under `src/examples/`, so exclude
the entire dir.
