Solving the problem of a non-renamed (not having end timestamp) video file

[vmdocua]

Preliminary plan and fixes related to Closes #73:

• Move common multi-threading code specific to capture projects to capturelib library from screencapture RecordingThread
• Update videocapture to use common threading, so all projects will be on the same plate.
• Try to extend common app code with USB hotplug callback (MWUSBRegisterHotPlug, e.g. like in USBDeviceDetect SDK example), to get more events related to USB device connectivity.
• Look/discuss/fix ability to log session related information to separate *.log file in videocapture/screencapture utilities.