Fix c generation for DIPLODOCUS and adapt it for .ttool

src/main/java/common/SpecConfigTTool.java

...in/java/tmltranslator/modelcompiler/TMLModelCompiler.java

src/main/java/ui/GTURTLEModeling.java

src/main/java/ui/MainGUI.java

src/main/java/ui/window/JDialogCCodeGeneration.java