1. stable version for parallel path extractor
1. improved parallelization by process multiple imeis in each process
1. fix the bug in calculating avg up/down speed
1. optimize the default parameters
2. skip serialization to improve performane
3. add process report log
1. fixed the bug of calculating avgDownSpeed
1. rewrite the serialization method to make it a more general method
2. Serialize result to file before doing any statistics
1. Add measurement for application mobility
1. the last version of app_mobility.py and app_state is wrong, fixed in
this version
2. add some comments to old code
1. add test entrance for measure_app_mobility()
Merge branch 'master' of https://github.com/hankes-garden/mycode.git

Conflicts:
	python_lab/pylab/app_mobility.py