Credits to GinjaNinja32@bay12 for developing dmitool and
PsiOmegaDelta@bay12 for some of these scripts. Thanks also to
neersighted for reminding me that we need this.
Basically this is like the map merger, except for icons. You can install
a hook using the instructions in the dmitool folder, and it should
automatically merge your DMIs for you. This means you can solve icon
conflicts effortlessly most of the time.