Remove '__print_same_level_compression' remnants

[ FIXED ]  Removed leftover '__print_same_level_compression'
calls.  This function was removed earlier and this removes the
need to export them (Cygwin)

[ FIXED ]  Restore the check on metatada errors referring to
'METADATA_BLOCK_PICTURE', now using wildcards for a more robust
check/search
Update to Version 0.21 (Cygwin)