Releasing 1.0.12.
Update copyright information. - Update year numbers in copyright headers. - Add copyright information for Michael Tokarev and Florian Forster to the copyright headers of files to which they have contributed significantly. - Mention Michael and Florian in AUTHORS. - Mention that tinc is GPLv3 or later if compiled with the --enable-tunemu flag.
Add license exception from Markus Oberhumer.
Stated that distributing executables linked with OpenSSL is permitted provided that all other requirements of the GPL are complied with.