Add cell define compiler directives for coverage sake.  On branch feature/preprocessor  Changes to be committed: 	modified:   tests/ifdef-2.v
Add cell define compiler directives for coverage sake.
 On branch feature/preprocessor
 Changes to be committed:
	modified:   tests/ifdef-2.v

ben-marshall/verilog-parser,ben-marshall/verilog-parser,ben-marshall/verilog-parser