Corrected the "pqact" utility's determination of the month associated with a data-product from the creation-time of the data-product and the day-of-the-month field in the product-identifier. This modification is tested extensively by executing the command "make check" in the pqact/ subdirectory.

Removed extraneous carriage returns from file pqact/wmo_header.c.

Added a persistent-state file for a downstream LDM. This file saves the metadata of the last, successfully-received data-product so that the next downstream LDM process that requests the same data from the same source can start where the previous process stopped. The files reside in the LDM user's home-directory and have the pattern ".*.info". This increases the startup performance of a downstream LDM and will greatly benefit LDM's with many REQUEST entries.

Changed format of distribution file from ".tar.Z" to ".tar.gz" because the "compress" utility is not available on my development workstation (due to IP restrictions) and the (now necessary) "gunzip" utility appears to be ubiquitous.

Corrected the "pqact" utility's determination of the month associated with a data-product from the creation-time of the data-product and the day-of-the-month field in the product-identifier.