[Rd] R CMD build - will reset the timestamps of all files in a package

[Valentin Todorov]

Dear developers,

I wonder why (R version 2.13.0 and after) the command "R CMD build"
sets the timestamp of all files in the package to the current
date/time. This seems not to be mentioned in the list of changes. Is
there an option to avoid this?

Best regards,
Valentin