[slf4j-dev] new indentation style

Hi All, I've added a new and experimental indentation style under .idea/codeStyleSettings.xml. Essentially it uses 4 spaces instead of 2 previously for indentation. It seems to me that 4 spaces are more common in the java world than 2. I've applied the new indentation to slf4j-api/src/main/java/org/slf4j/helpers/Util.java If there is support for this change, I'll apply the new style to the whole project. Your comments are welcome. -- Ceki