Be able to extract AppImages in desktops archiver tools

[probonopd]

This ticket tracks the status of how the AppImage MIME Type application/x-iso9660-appimage is handled in distributions and desktops.

Desktop	Archiver tool	Version	Opening with archiver	Can extract with right-click	Can mount with right-click
GNOME, Unity, Cinnamon	file-roller #766644	...	...	...	(Yes, but too complicated) Right-click, Open with other application, View all applications, Disk Image Mounter
KDE	Ark #363209	>= 16.08.0	Yes, can open AppImages, thanks @rthomsen	Yes	...
XFCE	thunar-archive-plugin	...	...	...	...
Cinnamon	file roller (see comment)	...	...	...	...
Mate	engrampa	...	...	...	...
LXDE	Xarchiver	...	...	...	...

[probonopd]

Ragnar Thomsen 2016-07-20 17:54:18 UTC
Git commit bf2de67e185f042165cd17b8b8996fae0cc97381 by Ragnar Thomsen.
Committed on 20/07/2016 at 17:47.
Pushed by rthomsen into branch 'Applications/16.08'.

Add support for AppImage

AppImages are both executables and ISO images and can be handled by
libarchive. Support for opening AppImages was enabled in the
libarchiveplugin. The mimetype for AppImage has been committed to
shared-mime-info, but has not yet been released. We therefore install a
custom mimetype for AppImage.

Test cases for this mimetype were added to MimeTypeTest and ArchiveTest.
FIXED-IN: 16.08.0
Differential Revision: D2226

Verified that Ark it can open AppImages now. As a side effect, when downloading AppImages on a KDE system, the default action for it is to be opened in Ark... might be good or bad depending on how you see it.

[probonopd]

Note that now we also have the type 2 image format.

[FabioLolix]

Cinnamon use file-roller too

[probonopd]

Thanks @FabioLolix, added.

[pirate486743186]

I filled an issue for engrampa
mate-desktop/engrampa#237

EDIT: and correct your table. You can't mount it with disk image mounter.
EDIT2: and ubuntu MATE also uses gnome-disk-image-mounter