master
Update libssh2 to 1.11.1
Merged gsoc-ssh branch. Closes #910
Upgrade libssh2 to 1.10.0
Backport libssh2/libssh2#1508 on recommendation from kumama_nui
Backport patches for libssh2 CVEs. Bump version string.
Patch 2 more libssh2 CVEs