Log Message:
shared-mime-info: update to 1.9.

shared-mime-info 1.9 (2017-18-09)
* Add x-systemd-unit and x-dbus-service MIME types
* Fix magic for application/x-java-keystore on little endian
* Add mime-type for STL 3D models and GCODE
* Add application/x-executable as a supertype of application/ecmascript
* Add shebang magic for gjs JavaScript files
* Add a mimetype for Khronos texture files
* Add a mime-type for Famicom Disk System images
* Add "font" top level type, and use IANA registered type for TTF,
  OTF, WOFF, TTC and WOFF2
* Add OpenCL mime-type
* Add text/x-python3 content type
* Add Audible.com mime type
* Add application/x-atari-lynx-rom
* Add application/x-wonderswan-rom
* Add application/x-virtual-boy-rom
* Better JPEG 2000 MIME type support
* Add support for GIMP data files (.gbr, .gih, .pat)
* Add an alias for Adobe Illustrator formats
* Add *.mjs glob for Javascript
* Rename application/x-trig to application/trig
* Rename Panasonic RAW image mime-types to image/x-panasonic-rw*
* Change the preferred suffix for image/x-tga from icb to tga
* Correct "PostScript" capitalisation
* Add mimetype for AppImage Type 2
* Remove AppImage glob with different casing