external: Sync with openconnect rev bd47abc

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
libs: Sync with latest openconnect sources

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
OpenVpnService: Update comments/flags on "Configure" button handler

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
OpenConnectManagementThread: Never pop up error alerts after user cancel

Assume that any errors that happen past the point where the user hits
"disconnect" are caused by the disconnection.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Update launcher icons to new "big white O" version

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
screenshots: Update to match new icon (again)

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Bump version to 0.6 (600)

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>