add gnome-wayland alongside gnome

Change-Id: I5d57f715edbadc7fef5c508cae7e98bcde0e4e5c
(cherry picked from commit edaacb62)
Reviewed-on: https://gerrit.libreoffice.org/17169Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

vcl/unx/generic/desktopdetect/desktopdetector.cxx

@@ -307,6 +307,8 @@ DESKTOP_DETECTOR_PUBLIC DesktopType get_desktop_environment()
             return DESKTOP_KDE4;
         if ( aOver.equalsIgnoreAsciiCase( "gnome" ) )
             return DESKTOP_GNOME;
+        if ( aOver.equalsIgnoreAsciiCase( "gnome-wayland" ) )
+            return DESKTOP_GNOME;
         if ( aOver.equalsIgnoreAsciiCase( "unity" ) )
             return DESKTOP_UNITY;
         if ( aOver.equalsIgnoreAsciiCase( "xfce" ) )
@@ -382,6 +384,8 @@ DESKTOP_DETECTOR_PUBLIC DesktopType get_desktop_environment()
         ret = DESKTOP_UNITY;
     else if ( aDesktopSession.equalsIgnoreAsciiCase( "gnome" ) )
         ret = DESKTOP_GNOME;
+    else if ( aDesktopSession.equalsIgnoreAsciiCase( "gnome-wayland" ) )
+        ret = DESKTOP_GNOME;
     else if ( aDesktopSession.equalsIgnoreAsciiCase( "mate" ) )
         ret = DESKTOP_MATE;
     else if ( aDesktopSession.equalsIgnoreAsciiCase( "xfce" ) )