magick.mk: Add new Uses file 'magick' for graphics/ImageMagick*

[tcberner]

Summary

Includes:

• magick.mk
• qa.sh changes
• convert tree to use magick.mk
• CHANGES entry to document usage

[tcberner]

• magick.mk: fix typoes

[tcberner]

• magick.mk: fix typo

[diizzy]

Great work, perhaps we should also take into account that graphics/GraphicsMagick is around and many ports that supports ImageMagick also supports GraphicsMagick to avoid confusion?

[tcberner]

In D32754#739560, @diizzy wrote:

Great work, perhaps we should also take into account that graphics/GraphicsMagick is around and many ports that supports ImageMagick also supports GraphicsMagick to avoid confusion?

For this one could support a versions arg of 'gm' possibly -- but that could be added in a second step.

[bapt]

won't it be interesting to also consider graphicmagick here?

[bapt]

In D32754#753202, @bapt wrote:

won't it be interesting to also consider graphicmagick here?

maybe as a second step