Always uncompress databases on the fly when loading. Without this patch,
a cvd database will first be unpacked to disk and then loaded.
Index: clamav/clamd/clamd.c
===================================================================
--- clamav.orig/clamd/clamd.c	2009-03-16 19:37:26.000000000 +0100
+++ clamav/clamd/clamd.c	2009-04-07 13:07:49.000000000 +0200
@@ -408,6 +408,7 @@ int main(int argc, char **argv)
 	logg("#Max A-C depth set to %u\n", opt->numarg);
     }
 
+    dboptions |= CL_DB_CVDNOTMP;
     if((ret = cl_load(dbdir, engine, &sigs, dboptions))) {
 	logg("!%s\n", cl_strerror(ret));
 	ret = 1;