Improves the hotplug response times on Windows which may be noticeably prolonged due to thread scheduling in cases of Windows Multimedia reporting lack of a device driver.

git-svn-id: https://svn.java.net/svn/jitsi~svn/libjitsi@10471 198c5059-ef06-4ec0-9a75-fdd6b0ef00a6
All Metaswitch fixes to date
Fix build and add a gitignore file.
Bug 942 Selected microphone sometimes changes

Add extra diagnostics to help diagnose after repro
Remove media logging as it has been moved to jitsi
Fix DTMF packet size so RFC 2833 digits are legal and are accepted by Metaswitch media gateways.