[Lazarus] LCL exports CC-licensed icons to every LCL application

[Ondrej Pokorny]

On 21.03.2016 9:54, Ondrej Pokorny wrote:
> For now, please take into consideration that your LCL application must 
> acknowledge the Silk Icon Set http://www.famfamfam.com/lab/icons/silk/

I replaced all Silk icons with icons from Tango in r52023. The biggest 
advantage is that the tango icons are SVG and nice PNG versions exist 
for different resolutions. So if we want to make these LCL icons 
high-DPI aware in the future, we can easily use the same icons in higher 
resultion. This wasn't possible with the Silk icons.

There are still some icons with unknown origin. I am waiting for Paul's 
answer where he got the icons from.

Ondrej