wlfreerdp: validate the TLS certificate interactively

Allow the user to decide if he trusts a new certificate
or not, just like we do with xfreerdp ; this allow running
wlfreerdp without using xfreerdp prior for this sole task.

Signed-off-by: Manuel Bachmann <tarnyko@tarnyko.net>
Update version.

Mark master as "dev" for development ;)
Revert a bug introduced in PR #2134

FREERDP_CHANNELS_SERVER_SRCS need to be added to server/common that the
symbols get added and exported with libfreerdp-server.

Also remove duplicated version information.
Merge pull request #2203 from bmiklautz/fix/symbols_and_version

Fix libfreerdp-server and version
winpr-comm: ignore errors on TIOCGICOUNT during the port initialization but the permissive mode must be on afterwards.
Merge pull request #2205 from eledoux/ports

winpr-comm: ignore errors on TIOCGICOUNT during the port initialization.
Merge pull request #2202 from Tarnyko/master

wlfreerdp: validate the TLS certificate interactively
Merge branch 'master' of github.com:FreeRDP/FreeRDP into smartcard
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Detect ThinLinc environnement runs from Thinlinc Windows Client.