huge refactoring to manage X!Tandem temporary files

src/fr/inra/pappso/xtandempipeline/class_msms/FastaFile.java

.../inra/pappso/xtandempipeline/class_msms/FastaFileSet.java

.../inra/pappso/xtandempipeline/class_msms/PeakListFile.java

...ra/pappso/xtandempipeline/class_msms/PeakListFileSet.java

...eline/class_msms/XtandemFiles/XtandemDatabaseXmlFile.java

...dempipeline/class_msms/XtandemFiles/XtandemModelFile.java

...pipeline/class_msms/XtandemFiles/XtandemParamXmlFile.java

...empipeline/class_msms/XtandemFiles/XtandemResultFile.java

src/fr/inra/pappso/xtandempipeline/class_msms/config.java

...inra/pappso/xtandempipeline/sax_parse/xtandem_params.java

.../pappso/xtandempipeline/thread/XtandemCondorAnalysis.java

.../inra/pappso/xtandempipeline/thread/xtandem_analysis.java

...pappso/xtandempipeline/ui/swt/Xtandem_Analysis_Param.java

...fr/inra/pappso/xtandempipeline/ui/swt/Xtandem_preset.java