Replace Heisenbug.py with HeisenbugTester.py and HeisenbugInjecter.py
Minor changes to the Agents to incorporate LogcatAgent instead of using
logcat directly
Minor bug fix on MonkeyHelper to use encode utf-8 when executing shell
commands.
Merge branch 'master' of https://github.com/mcgill-cpslab/MonkeyHelper
New step: HeisenbugInjecter and HeisenbugReplayer
Refined HeisenbugTester and all the agents to use encode utf-8 when
using the shell.
Merge branch 'master' of https://github.com/mcgill-cpslab/MonkeyHelper

Conflicts:
	src/MonkeyHelper.py
minor indent issue fixed
reorganize files