Leia atentamente estas linhas
icedtea-7-jre-jamvm : Depends: openjdk-7-jre-headless (= 7u65-2.5.2-3~14.04) but 7u65-2.5.1-4ubuntu1~0.14.04.2 is to be installed
openjdk-7-jre : Depends: openjdk-7-jre-headless (= 7u65-2.5.2-3~14.04) but 7u65-2.5.1-4ubuntu1~0.14.04.2 is to be installed
Tudo o que você precisa é reinstalar openjdk
package, porque um de seus pacotes depende de versões inferiores.