Making it easier for cygwin users to run OpenDaylight using run.sh.
With this change, the users will only have to add the following line
to their .bashrc to make it run: export CLASSPATH=".;lib/*;"

Change-Id: Ia1eae6c2feb69471198bdc6c625e2276e9b89334
Signed-off-by: Srini Seetharaman <srini.seetharaman@gmail.com>