The rdpContext gets an event which will
get set if an error occoured in a channel.
If a thread or a void callback has to report an
error it will get signaled by this system.
+ add: COMMAND_LINE_IGN_UNKNOWN_KEYWORD flag for CommandLineParseArgumentsA to ignory unknown keys without fail
+ add: lot of WLog_DBG() in drdynvc, add function names in existing
* change: error text in rdpsnd OSS
* fix: dev in rdpsnd does not work
* fix/change: audio-dev renamed to dev and now work in audin
* fix dynamic channels now work again
