Function read_tgz_file
Reads a .tar.gz file, filename, in and extracts file(s) from it. essentially just a shortcut for read_tgz_data().
		
		Package: SMF
Copyright: 2020 Simple Machines and individual contributors
License: BSD
Author: Simple Machines https://www.simplemachines.org
Located at Sources/Subs-Package.php
	
	Copyright: 2020 Simple Machines and individual contributors
License: BSD
Author: Simple Machines https://www.simplemachines.org
Located at Sources/Subs-Package.php
| string | $gzfilename | The path to the tar.gz file | 
| string | $destination | The path to the desitnation directory | 
| boolean | $single_file = false | If true returns the contents of the file specified by destination if it exists | 
| boolean | $overwrite = false | Whether to overwrite existing files | 
| null|array | $files_to_extract = null | Specific files to extract | 
| 
			array|false
		 | An array of information about extracted files or false on failure |