Semantic passes are partially working in DParser now

[DavidL]

I created a folder named testsuite, the little example with  
Compile-Time-Function-Evaluation works
with the pragma statement.

Thanks for people who are interested in this project. That's the power  
pushing me to make it better.

Some issues still exist. Though it's exciting for me to making it emit  
something from a CTFE through
pragma :D


DavidL