TISTUD-5426 Avoid modifying the permissions on the tizen downloadable temp directory
  - Move my performance hack down from TitaniumSDKTools.extract. When we can (non-Windows, no modifying content as we extract, no prompting on conflicts) - use the native unzip binary to unzip. This should be quicker since it _should_ retain permissions and we don't need to extract files using Java ZipEntry API and then run chmod on all of them!