Fix 80ubuntu-xmodmap in tdebase on Debian and Ubuntu

(cherry picked from commit fb019470a7)

debian/lenny/kdebase/debian/80ubuntu-xmodmap

@@ -2,11 +2,13 @@
 #
 # This file is sourced by Xsession(5), not executed.
 # The "|| true" is to ensure that the Xsession script does not terminate on error
-/usr/bin/xmodmap /usr/share/apps/kxkb/ubuntu.xmodmap || true
 
 USRMODMAP="$HOME/.Xmodmap"
 
 if [ -x /usr/bin/xmodmap ]; then
+        if [ -f /usr/share/apps/kxkb/ubuntu.xmodmap ]; then
+                /usr/bin/xmodmap /usr/share/apps/kxkb/ubuntu.xmodmap || true
+        fi
         if [ -f "$USRMODMAP" ]; then
                 /usr/bin/xmodmap "$USRMODMAP" || true
         fi

debian/squeeze/kdebase/debian/80ubuntu-xmodmap

@@ -2,11 +2,13 @@
 #
 # This file is sourced by Xsession(5), not executed.
 # The "|| true" is to ensure that the Xsession script does not terminate on error
-/usr/bin/xmodmap /usr/share/apps/kxkb/ubuntu.xmodmap || true
 
 USRMODMAP="$HOME/.Xmodmap"
 
 if [ -x /usr/bin/xmodmap ]; then
+        if [ -f /usr/share/apps/kxkb/ubuntu.xmodmap ]; then
+                /usr/bin/xmodmap /usr/share/apps/kxkb/ubuntu.xmodmap || true
+        fi
         if [ -f "$USRMODMAP" ]; then
                 /usr/bin/xmodmap "$USRMODMAP" || true
         fi

ubuntu/maverick/kdebase/debian/80ubuntu-xmodmap

@@ -2,11 +2,13 @@
 #
 # This file is sourced by Xsession(5), not executed.
 # The "|| true" is to ensure that the Xsession script does not terminate on error
-/usr/bin/xmodmap /usr/share/apps/kxkb/ubuntu.xmodmap || true
 
 USRMODMAP="$HOME/.Xmodmap"
 
 if [ -x /usr/bin/xmodmap ]; then
+        if [ -f /usr/share/apps/kxkb/ubuntu.xmodmap ]; then
+                /usr/bin/xmodmap /usr/share/apps/kxkb/ubuntu.xmodmap || true
+        fi
         if [ -f "$USRMODMAP" ]; then
                 /usr/bin/xmodmap "$USRMODMAP" || true
         fi