Revert "Lower HISTORY limit to 25 for scripts to create multiple directories"

This reverts commit f41438cb6c4e1fe9e265bcf39797a027b3493b16.
Lowering HISTORY limit may potentially affects existing client scripts.
Revert "Prevent sar from appending data to data from the preceding month"

This reverts commit b07b592990fe8f140044930676dafe92377f6eae.
Lowering HISTORY limit may potentially affects existing client scripts.