Bug 571694 - Update product version number to 4.20 across build script

Change-Id: Ic557ead2c0c284aff74b839fae7f4930631b13ca
Signed-off-by: Sravan Kumar Lakkimsetti <sravankumarl@in.ibm.com>

features/org.eclipse.platform-feature/rootfiles/.eclipseproduct

diff --git a/features/org.eclipse.platform-feature/rootfiles/.eclipseproduct b/features/org.eclipse.platform-feature/rootfiles/.eclipseproduct
index 878ce1a..f26eb2e 100644
--- a/features/org.eclipse.platform-feature/rootfiles/.eclipseproduct
+++ b/features/org.eclipse.platform-feature/rootfiles/.eclipseproduct
@@ -1,3 +1,3 @@
 name=Eclipse Platform
 id=org.eclipse.platform
-version=4.19.0
+version=4.20.0