0N/A08-06-06 sync with vcodex kpv update
157N/A06-05-09 don't add .qz to non-regular file paths
0N/A06-04-28 use input suffix on output if it doesn't already have one
0N/A05-11-09 fix mixed input compression logic
0N/A05-08-23 use sfdcvcodex() instead of vcsfio()
0N/A delay RS_WRITE_FILE until first encoded input if possible