* new command svn2stage, to prepare folders for entering changes
* new command wtar, to proparly tar what needs to be tared
* using STAGING_FOLDER, SVN_CHECKOUT_FOLDER, SVN_CLIENT_PATH, DOWNLOAD_TOOL_PATH, CHECKSUM_TOOL_PATH instead of __STAGING_FOLDER__ , __SVN_FOLDER__, __RESOLVED_SVN_CLIENT_PATH__, __RESOLVED_DOWNLOAD_TOOL_PATH__, __RESOLVED_CHECKSUM_TOOL_PATH__
* wtar files are expnaded during sync not during copy
* new method for PlatformSpecificHelperBase & derivatives: tar/untar