uaverify updates for 0.7.3

    - added package_info.py to extract information about the package for command line tools and Jenkins build
    - fixed issue where displaying the version number for uav-ios cleaned up build artifacts
    - pep8 tweaks
    - version # update
    - Updated temp directories for use in Jenkins
      probably a bad idea to presume that tmp would be writable.
Merge pull request #19 from urbanairship/0.7.3rc

uaverify updates for 0.7.3
Fixed two issues that came up during static analysis

- removed import of pdb
- fixed reference to variable