Added JetBrains IntelliJ IDEA Inspections format support

JetBrains IntelliJ IDEA is very good java IDE with sophisticated static analysis mechanism - inspections. This commit adds parser for inspection xml reports. These reports can be generated either from GUI or from command line execution (instructions here: http://www.jetbrains.com/idea/webhelp/running-inspections-offline.html).
One thing is really irritating - filenames in report are generated like "file://$PROJECT_DIR$/src/.../Class.java" and it's unconfigurable, that's why I convert such names to "src/.../Class.java". Solution is controversial but in this way Jenkins can display source code and highlight problem lines.