parse_message_file: check spaces when concatenating text string
Configuration, Error-handling, Localization and Logging
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Message texts can be written on multiple lines in the configuration file, but this is just a convenience for the app programmer. These lines are concatenated together to form a long string. This concatenation should be done in an intelligent manner, to avoid doubling up a space character at the end of one of the lines, for example. (Each line should be stripped of leading and trailing white space and then a single space character should be inserted at the end of each line except the last.)