Limitted support for v91f

Allows to create the delana_rd executable. Along with the event server, this should allow to reprocess events for viewing for this year.

scripts/make_dellib

@@ -990,12 +990,11 @@ sub CreateDBstuff{
 
 sub DBsnap {
   my $dtobin = "$DELPHI_BIN/dtobin";
-  PrintInfo("WARNING! dbsnap step is skipped !");
-  return;
-  if ( $OS ne "OSF1" && $OS ne "Linux" && $OS ne "Darwin"){
-    PrintInfo("WARNING! To avoid problems, the snapshot database has to be created on OSF!!");
+  if ( $OS ne "OSF1"){
+      PrintInfo("WARNING! NOT creating the snapshot database on $OS");
     return;
   }
+  PrintInfo("WARNING! Creating the snapshot database on $OS");
   if ( $OS eq "AIX" ){
     PrintInfo("WARNING! Because of a bug in \"dtobin\",",
               "no snapshot database will be created on AIX!!");
@@ -1003,6 +1002,8 @@ sub DBsnap {
   }
   PrintError("No DTOBIN executable \"$dtobin\" found") if not -x $dtobin;
   my %snap = (
+	      "v90e"  => [qw(CERNSNAP2001_90.ASC)],
+	      "v91f"  => [qw(CERNSNAP2001_91.ASC CERNSNAP2001_91_VD.ASC CERNSNAP2001_91_FCB.ASC)],
 	      "v92e"  => [qw(CERNSNAP2001_92DELSIM.ASC CERNSNAP92EFIT2001.ASC CERNSNAP2001_92EDELANA.ASC)],
 	      "v93d"  => [qw(CERNSNAP2001_93DELSIM.ASC CERNSNAP93DFIT2001.ASC CERNSNAP2001_93DDELANA.ASC)],
 	      "v94c"  => [qw(CERNSNAP94CFIT2001.ASC CERNSNAP2001_94CDELANA.ASC CERNSNAP2001_94DELSIM.ASC MLEP.ASC)],