Bug 558382 - Build with tycho 1.6.0

Switch tycho pomless version.

Change-Id: I2f1e7ba4db14914028401e8de7572e79076d64ca
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/.mvn/extensions.xml b/.mvn/extensions.xml
index 5724f5e..710a9ec 100644
--- a/.mvn/extensions.xml
+++ b/.mvn/extensions.xml
@@ -3,6 +3,6 @@
   <extension>
     <groupId>org.eclipse.tycho.extras</groupId>
     <artifactId>tycho-pomless</artifactId>
-    <version>1.5.1</version>
+    <version>1.6.0</version>
   </extension>
 </extensions>
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