Some of the areas are guesses I've added after seeing them, whoever feels reponsible
for whichever part of the code feel free to adjust them.
Change-Id: I2192de84d51cc2bc7c28fa84019d38b465985d15
The plugin is intentionally built using a custom Makefile,
because it's used by gbuild, so I don't want to build the plugin
using gbuild too. It is also intentionally not placed under workdir/,
as that is cleaned by 'make clean', the plugin is cleaned only
by 'make distclean', so that cleaning it doesn't cause ccache misses.
No actual functionality in the plugin itself yet.
Change-Id: Ic05eba8d6260eec123c9e699eb5385abfe1b832f