[antlr-interest] A suggestion for C runtime

[Gokulakannan Somasundaram]

Hi,
   A small suggestion for improvement on ANTLR C Runtime would be to, make
sure the const correctness is present in the code. While this is not very
important, it helps a lot while getting integrated into a already
standardized code. I found it difficult especially in the places where it
takes the query for processing. It can be pANTLR3_UINT8 const, instead
of pANTLR3_UINT8.

Thanks,
Gokul.