Systemless ImageMagick-7

Update your ROM's with ImageMagick-7 systemlessly.

ImageMagick-7 binaries provided by cherryleafroad

WARNING: only for ImageMagick arm64-v8a actually - arm64 is checked during install

Changelog:

v4

Removed erroneous link creation in on_install() Added wrapper script with the needed env in system/bin

v3

More messages in shells

v2

Corrected shells: links & such

v1

Created for Android-arm64-v8a-ImageMagick-7.0.8-62-static