update build to Eclipse Tycho 0.16

Signed-off-by: Florian Thienel <florian@thienel.org>
diff --git a/org.eclipse.vex.docbook/build.properties b/org.eclipse.vex.docbook/build.properties
index 17df738..2565473 100644
--- a/org.eclipse.vex.docbook/build.properties
+++ b/org.eclipse.vex.docbook/build.properties
@@ -5,9 +5,9 @@
                META-INF/,\
                4.5/,\
                5.0/
-               
 src.includes = styles/,\
-               4.5/
+               4.5/,\
+               5.0/
 source.. = src/
 jars.compile.order = .