[Lazarus] Docking manager implementation

[Hans-Peter Diettrich]

Graeme Geldenhuys schrieb:

>> Looks as I'm too stupid to make the demo work :-(
>> I'm not experienced with installing Java...
> 
> I have the Java SE Runtime Environment (build 1.6.0_03-b05) installed.
>  Using Ubuntu Linux, I installed it via apt-get.

I've had build 1.5.0_17-b04 first, now 1.6.0_11-b03, but this makes no 
difference (execpt for a longer error log).

> I then downloaded the swingdemoapp.jar file and ran it via the command line.

I got a swingdemoapp.jnlp, and a swtdemoappbase.jar.

The .jnlp is a "invalid or corrup jarfile", the .jar throws an exception
NoClassDefFoundError :-(

DoDi