Update directory structure related to tuneup module.
- Previously, automation scripts related to tuneup module were stored
under the Scripts/Modules/Tuneup directory and their related
documentation files at Documentation directory. This organization
seems to be inappropriate when building rpm packages. In order to
provide a better organization, this update moves automation scripts
related to tuneup module from Scripts/Modules/Tuneup directory to
tcar-scripts-tuneup directory and the related documentation files
from Documentation to tcar-scripts-tuneup-docs directory.