Made sample references a primitive type.

compiler/CS_CodeGen.jrag

compiler/C_CodeGen.jrag

compiler/Java_CodeGen.jrag

compiler/LabCommParser.parser

compiler/LabCommTokens.jrag

compiler/Python_CodeGen.jrag

lib/c/labcomm_encoder.c

lib/c/test/test_labcomm_generated_encoding.c

lib/csharp/se/lth/control/labcomm/Decoder.cs

lib/csharp/se/lth/control/labcomm/DecoderChannel.cs

lib/csharp/se/lth/control/labcomm/Encoder.cs

lib/csharp/se/lth/control/labcomm/EncoderChannel.cs

lib/java/se/lth/control/labcomm/Decoder.java

lib/java/se/lth/control/labcomm/DecoderChannel.java

lib/java/se/lth/control/labcomm/Encoder.java

lib/java/se/lth/control/labcomm/EncoderChannel.java

lib/python/labcomm/LabComm.py

lib/python/labcomm/__init__.py

test/relay_gen_c.py

test/relay_gen_java.py