[Inkscape-devel] icon-names.h

This file explains itself thus:

* This file exists for several reasons: firstly, it contains all the icon names * in Inkscape, so it can serve as a reference to themers. Secondly, using * macros instead of strings avoids typos. Thirdly, we can change names * to conform to external icon sets / specifications without changing any code.

Let's look:

- Before, all the icon references were also in one place - in verbs.cpp, where they were adjacent to other verb metadata and thus easier to understand.

- Before, to add a new verb with an icon, I had to add icon ID in one place. Now I have to add icon ID _and_ the define name. How is this better for typos?

- icon-names.h is "code" just as well - at least if you change it, you have to recompile.