jdk8 message drop 40 pit1 test

1. word "file" ([-certchain <file>]) can be translated to make it consistent with rest of translation
zh_CN: http://bej301328.cn.oracle.com/gatejava/test/jdk2/results/8/drop40pit1/jdk-x86-offline/win7-zh_CN/t170166-jdk-jarsinger.txt
en: http://bej301328.cn.oracle.com/gatejava/test/jdk2/results/8/drop40pit1/jdk-x86-offline/win7-en/t170166-jdk-jarsinger.txt

2. colon ':' should be used instead of dot '.'
de: http://bej301328.cn.oracle.com/gatejava/test/jdk2/results/8/drop40pit1/jdk-x86-offline/win7-de/jaxp_sax.txt
ja: http://bej301328.cn.oracle.com/gatejava/test/jdk2/results/8/drop40pit1/jdk-x86-offline/win7-ja/jaxp_sax.txt
en: http://bej301328.cn.oracle.com/gatejava/test/jdk2/results/8/drop40pit1/jdk-x86-offline/win7-en/jaxp_sax.txt