[gimp] desktop: add "GIMP" in keywords to fix search with flatpak.

[Jehan Pagès <jehanp src gnome org>]

commit 472608fe75006cb018e7ff2736c9badd195194f2
Author: Jehan <jehan girinstud io>
Date:   Thu Sep 22 14:14:10 2016 +0200

    desktop: add "GIMP" in keywords to fix search with flatpak.
    
    The only reason "gimp" can be used to search for the software (for
    instance in GNOME overview) is because it is the Exec (the short name
    is written neither in the Name nor Comment sections). When packaged by
    systems like flatpak, this key is changed to `flatpak run ...` and
    searching "gimp" does not even return the software!
    Adding a Keywords entry to our desktop file fixes this.
    
    Apart from "gimp", I take the opportunity to add other relevant keywords
    from our website which currently would not display GIMP as a result:
    graphic design illustration painting.

 desktop/gimp.desktop.in.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/desktop/gimp.desktop.in.in b/desktop/gimp.desktop.in.in
index 776e4ee..12bb85d 100644
--- a/desktop/gimp.desktop.in.in
+++ b/desktop/gimp.desktop.in.in
@@ -4,6 +4,7 @@ Type=Application
 _Name=GNU Image Manipulation Program
 _GenericName=Image Editor
 _Comment=Create images and edit photographs
+_Keywords=GIMP graphic design illustration painting
 Exec=@GIMP_COMMAND@ %U
 TryExec=gimp-@GIMP_APP_VERSION@
 Icon=gimp