Squashed commit of the following:

commit 10b8b0bf302607ccb4ba59af05f463e1e8a63895
Author: vershov <vladimir.a.ershov@gmail.com>
Date:   Wed Feb 19 16:52:18 2014 +0100

    small fix

commit 0f1505461e56cfc2243a6e028c92c51b76fec82e
Author: vershov <vladimir.a.ershov@gmail.com>
Date:   Wed Feb 19 13:09:07 2014 +0100

    changes into exec time measurement

commit 4efcca39e5d90df8ebc3eaa1d9b10c7cae77e8a9
Author: vershov <vladimir.a.ershov@gmail.com>
Date:   Tue Feb 18 22:57:48 2014 +0100

    Adding execution time measurement facility