GCOV take 2 preview

[Poul-Henning Kamp]

Poul-Henning Kamp writes:

> I gave up fixing our current code-coverage setup:  Too much have
> shifted under our feet since that was written.
>
> Instead I started over with LLVM's coverage support, and I now
> have the first preliminary output:
>
> 	https://phk.freebsd.dk/misc/gcov2/

Now also with:

* sparklines
* all executables counted

Still missing:

* Coverage without root-privs (ie: no jailing)
* Whatever else is still missing
* Distill the history file (currently 450MB+)

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.