increase version of Tycho and fix build-dependent encodings

Author: kwin

com.googlecode.cppcheclipse.parent/pom.xml

@@ -14,7 +14,8 @@
 	</prerequisites>
 
 	<properties>
-		<tycho-version>0.17.0</tycho-version>
+		<tycho-version>0.18.1</tycho-version>
+    	<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>
 
 	<build>