changed version to 0.9.12
* Added option to limit stage2svn to specific folders, to save time.
 new resolve method and tests
 new resolve method most calls to var_list.get_str,  var_list.resolve_string replaced with  var_list.resolve.
* New resolve methods for ConfigVarList: resolve, resolve_to_list, replace previous methods: get_str, resolve_string get_list.
* Tests for new resolve methods.
* Removed unused member Configvar.__resolving_in_progress, preventing circular resolves is done in ConfigVarList.
* Replaced all previous resolve methods with resolve, resolve_var, resolve_to_list, resolve_var_to_list.
removed redundant resolve
 style array references
    * Intrduced $(A[0]) array style references.
changelog
Merge branch 'master' into shai

* up-repo-rev command become batch producing.
* up-repo-rev command use aws commadn line instead of boto.
up-repo-rev commadn gets --run option
resolve after merge from master
no mention of AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY