Refactor build console code, prepare to use prefs.
Added preference page to customize build console colors.
Made build console react to color pref changes immediatly.
Added ACTIVATE_ON_ERROR_MESSAGES console option
Initial refactoring of some preferences code.
More refactoring of preferences code.
Refactoring of melnorme.lang.ide.core.utils.prefs
Move prefs class.
Refactoring of Go workspace and env related code.
Rename console package and some classes.
Cleanup of Environment class and project preferences code.
Second stage of the previous cleanup.
Refactoring of SWT components code, new ArgumentsGroupField.
Support for extra build options (fix #45)
Prevent redundant build start messages.
Use newline to separate args in build console display
Removed of unused navigator extension.
Lang updates:
Added new utils.
Added Preferences entries helper.
Added Tool Console.
Fix: actually parse Eclipse variables for project options.
Add some preference pages