Changes seem reasonable to me (although not exactly my specialty). Should I assume you ran make dist or distcheck to ensure everything gets to the right place?
On several distributions... If anything weird pops up we can just fix it after the fact.
I'm missing some things so those don't work for me any more (first error for me was "recipe for target 'libvirt-daemon-arch.png' failed" - I didn't bother to dig).
Looks like those .png files are created from .fig files using convert(1)... Do you have ImageMagick installed on your host?
seems so: # dnf list installed ImageMagick Last metadata expiration check: 1:30:56 ago on Mon Apr 25 08:47:34 2016. Installed Packages ImageMagick.x86_64 # I'm not too worried about it though - some day when I have the need I'll chase it down - not on my have to do list though! John