Move classes from globjects

[scheibel]

If globjects is about to get the dependency to cppassist, the following classes can be moved here:

• AbstractFunctionCall / FunctionCall
• ChangeListener / Changeable
• HeapOnly
• Referenced / ref_ptr
• Singleton

Additionally, the logging can get merged (AbstractLogHandler, ConsoleLogger, LogMessage, LogMessageBuilder, LogMessageLevel, baselogging, formatString).

Maybe, the string source class hierarchy would remain in globjects but I wouldn't mind moving them here:

• AbstractStringSource
• CompositeStringSource
• File
• StaticStringSource
• StringSourceDecorator
• StringTemplate

[cgcostume]

is this still relevant . globjects has still no dependency to cppassist (but cpplocate)