This MR is to use stdhepsplit in ILDProductionChainOpt2017.py.
To this end, a generator file name convention is newly defined in Core/Utilities/FilenameEncoder.py. Additionally, Core/Utilities/resolvePathsAndNames.py is now assumes input is a generator file, if the first character of file name is "E". It returns the input file name, if the first character is neither "s", "r" nor "E". Previously, it returned an empty string, if neither "r" nor "s".