Adds libxo flags to fstat and fuser.
Removes extra space added to mode string; all outputs now give a clean mode string.
JSON/XML structure for fstat stays:
processes_list > process_info > files_list > file_info
JSON/XML structure for fuser is:
files_list > file_info > consumers_list > consumer
fuser in text mode preserves original behaviour of sending separate information to stderr and stdout, while all machine-readable output goes to stdout.
man page update