Host pattern lists were evaluated per-pattern with 'any', so
'Host * !*.launchpad.net' matched ppa.launchpad.net via the wildcard;
a block now applies only if a positive pattern matches and no negated
one does (OpenSSH's rule). The system ssh_config was read first with
first-obtained-wins, inverting OpenSSH's user-over-system precedence;
the user file is read first now. A Match block also no longer leaks
the previous Host block's match state (its options are ignored until
the next Host).
vhaudiquet
27ab4cb9ad