pdist Fix excludes for running kernel

With commit baec330 ("pdist: Do not
delete running kernel") the removal of the files needed by the
running kernel was prevented by adding the relevant drectories to
the EXCEPTS array. This worked, however it also prevent pdist from
updating delivering any files into the excluded directories, e.g. after
an incomplete install by mariuxinstaller.

Do not prevent installs and updates of the directories used by the
running kernel. Do prevent their removal only.

pdist/pdist

@@ -651,20 +651,6 @@ sub prog_update
 
 	local($, , $\)=(' ',"\n");
 
-	if ($function == F_UPDATE) {
-		chomp (my $linux_version=`uname -r`);			# '5.4.0-rc2.mx64.295'
-		if ($linux_version) {
-			my ($build) = $linux_version =~ /\.(\d+)$/;
-			push @EXCEPTS,
-				"/boot/mariux.$build",
-				"/boot/bzImage-$linux_version",
-				"/lib/modules/$linux_version",
-				"/boot/config-$linux_version",
-				"/boot/System.map-$linux_version",
-				"/usr/share/nvidia/kernel/$linux_version",
-		}
-	}
-
 	if ($tarfile && $tarfile ne '-') {
 		-d $TMPDIR or mkdir $TMPDIR or die $TMPDIR.": $!\n";
 		if (-d $TMPUPDDIR) {
@@ -796,7 +782,21 @@ sub prog_update
 
 	if ($function==F_UPDATE) {
 		if ($delete) {
+			my %except;
+			chomp (my $linux_version=`uname -r`);			# '5.4.0-rc2.mx64.295'
+			if ($linux_version) {
+				my ($build) = $linux_version =~ /\.(\d+)$/;
+				%except=map {$_=>1} (
+					"/boot/mariux.$build",
+					"/boot/bzImage-$linux_version",
+					"/lib/modules/$linux_version",
+					"/boot/config-$linux_version",
+					"/boot/System.map-$linux_version",
+					"/usr/share/nvidia/kernel/$linux_version",
+				)
+			}
 			for my $path (keys %CLEAN) {
+				$except{$path} and next;
 				lstat $path or die "$path: $!\n";
 				if (-e _) {
 					if (-d _) {