Provide common way for logging

[fgdrf]

Situation now:

• lots of Bundle-Activators implement static functions for logging (log / trace)
• implementations are quite equal except the bundle-id used
• To fix things, e.g. remove Systouts for Replace sys.out by logger #582 end up changing many modules

Suggested solution:

• Provide common logging-functionality within uDig (so that behavior is the same overall modules and extensions), e.g. in udig.core
• mark all log/trace/debug functions in Activatore as deprecated and delegate calls to the new Implementation which method signitures has a bundle to log messages for

public static void log( Bundle bundle, String message, Throwable e );