write 'say' to standard error, and don't mention the program
write 'say' to standard error, and don't mention the program

This highlights them in a nice red color when logging to a terminal.
Furthermore, the program isn't necessary; the date should be
sufficient for distinguish our 'sayings' from other output.

Zimbra/vagrant-provision-zimbra,quanah/vagrant-provision-zimbra,danchr/vagrant-provision-zimbra,plobbes/vagrant-provision-zimbra