Fetch and build inputs steps were not up to date so I fixed it
piotrnar's gitian sigs for v0.8.6.1
wtogami's gitian.sigs.ltc for v0.8.6.1 (fixed broken win32 deps)
README.md: create virtual machines, move SIGNER and VERSION later
wtogami's gitian.sigs.ltc for v0.8.6.2
merged with upsteram