started adding type hierarchy to Java API and unifying that with

.gitignore

compiler/2014/ArrayTypeRewrite.jrag

compiler/2014/Java_CodeGen.jrag

compiler/2014/LabComm.ast

compiler/2014/Refactoring.jrag

examples/user_types/Decoder.java

examples/user_types/Makefile

examples/user_types/TDDecoder.java

examples/user_types/TestDataType.java

examples/user_types/test.lc

lib/java/Makefile

lib/java/se/lth/control/labcomm2014/ASTbuilder.java

lib/java/se/lth/control/labcomm2014/DataType.java

lib/java/se/lth/control/labcomm2014/NameSymbol.java

lib/java/se/lth/control/labcomm2014/ParsedSampleDef.java

lib/java/se/lth/control/labcomm2014/ParsedTypeDef.java

lib/java/se/lth/control/labcomm2014/SampleDispatcher.java

lib/java/se/lth/control/labcomm2014/SampleSymbol.java

lib/java/se/lth/control/labcomm2014/SigArrayType.java

lib/java/se/lth/control/labcomm2014/SigField.java