update eclipse base and tycho versions

Author: Gyorgy Orban

eclipse-plugin/eclipse/cc.codechecker.eclipse.parent/pom.xml

@@ -12,9 +12,9 @@
     <packaging>pom</packaging>
 
     <properties>
-        <tycho.version>0.22.0</tycho.version>
+        <tycho.version>1.2.0</tycho.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <eclipse-repo.url>http://download.eclipse.org/releases/mars</eclipse-repo.url>
+        <eclipse-repo.url>http://download.eclipse.org/releases/oxygen</eclipse-repo.url>
     </properties>
 
     <repositories>

eclipse-plugin/eclipse/cc.codechecker.eclipse.repository/pom.xml

@@ -28,7 +28,7 @@
             <plugin>
                 <groupId>org.eclipse.tycho</groupId>
                 <artifactId>tycho-p2-repository-plugin</artifactId>
-                <version>0.22.0</version>
+                <version>1.2.0</version>
                 <configuration>
                     <includeAllDependencies>true</includeAllDependencies>
                 </configuration>

eclipse-plugin/eclipse/pom.xml

@@ -15,7 +15,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <eclipse-repo.url>http://download.eclipse.org/releases/mars</eclipse-repo.url>
+        <eclipse-repo.url>http://download.eclipse.org/releases/oxygen</eclipse-repo.url>
     </properties>
 
 </project>