Add plugin.properties missing in the final jar

Author: laeubi

debug/org.eclipse.debug.terminal/build.properties

@@ -4,5 +4,6 @@ bin.includes = META-INF/,\
                .,\
                plugin.xml,\
                OSGI-INF/,\
-               about.html
+               about.html,\
+               plugin.properties
 src.includes = about.html