Merge pull request #3408 from ey6es/master

Slight fix for Blender fix.
fix build for no XMPP
new head penumbra gain calculations
disable input gain/mute
Merge pull request #3409 from AndrewMeadows/inertia

fix build for no XMPP
coding standard
Merge pull request #3410 from chansensturm/audio-noise

Head Penumbra filter gain smoothing
fix warning in ByteCountCoded<>
removed unused lastAttemptedSubTree
add use of missingSet in release build to silence warning
fixed warnings and converted several asserts to debug messages
fix more warnings, replace assert with debug message
fixed another warning
attempt to fix warning
fix warning
fix windows warnings
fix type signed/unsigned warning
fixed use of uninitialized variable warning
fix type signed/unsigned warning
fix more signed/unsigned warnings