Function Print-Ut

Part of:

package metabang.utilities
( print-ut < ut > &optional < stream > < time-only? > < print-seconds? > )
Prints `ut' in the format [M]M/[D]D [H]H:MM or [M]M/[D]D [H]H:MM:SS if
`print-seconds?' is true. Omits the day part if `time-only?' is true.