Modifications of variables within For block discarded after block end

[Stan Lagun]

In some macro (For, Switch, maybe some others) modifications that are made to local method variables are visible only within that macro block and discarded after it exits

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/104651

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/104651
Committed: https://git.openstack.org/cgit/stackforge/murano/commit/?id=9a39c31cb985e84e7800bc1136430b08eea7f6dd
Submitter: Jenkins
Branch: master

commit 9a39c31cb985e84e7800bc1136430b08eea7f6dd
Author: Stan Lagun <email address hidden>
Date: Thu Jul 3 23:10:29 2014 +0400

    Unit tests for macro blocks

    Also:
     * fixes local variable scope for several macro
     * make thrown exceptions be more descriptive
     * parsing error happened when Limit for ParallelCode was integer (and not expression)
     * improved Break support

    Change-Id: Ie17240c2d343014ce3da9ddc6577cf93cf99b106
    Closes-Bug: #1337512
    Partial-Bug: #1316786