libclamav: remove unused lastzip var
libclamav: SCAN_ALL fix
clamd: add AllowAllMatchScan config option for permit/deny ALLMATCHSCAN command
Scan_all: virus alert handling improvements
Scan_all: default AllowAllMatchScan to yes
Scan_all: fix typo
Scan_all: make sure flag reaches ac_scanbuff and cleaner clamd support
Scan_all: clamd fix
Scan_all: only cache when truly clean
fix for bb #8277
bb #8385: PDF ASCII85Decode zero-length fix