Eclipse Verilog editor Code

Implement strict syntax check, storing variables and evaluating constant expression

Store parameter value

Handle Verilog compiler directive such as define, ifdef...

Removed test code and added exception catching to bad color conversion from string

Moved away from EclipsePreference store and used IPreferenceStore

Modified getString and getBoolean to return the default values with the key is not found

Updated version number

used preferences.strings instead of hard coded values

Improved the correlation of errors with source files