[jhbuild] world: Switch all 3 libxmlplusplus versions to meson

[Kjell Ahlstedt <kjellahl src gnome org>]

commit e233658c4a5bf0352e9a66236e10b55a3e817f29
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Tue Jun 30 13:28:04 2020 +0200

    world: Switch all 3 libxmlplusplus versions to meson

 modulesets/gnome-world.modules | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/modulesets/gnome-world.modules b/modulesets/gnome-world.modules
index 186d2c43..840abc09 100644
--- a/modulesets/gnome-world.modules
+++ b/modulesets/gnome-world.modules
@@ -2491,32 +2491,32 @@
     </dependencies>
   </autotools>
 
-  <autotools id="libxmlplusplus-3">
+  <meson id="libxmlplusplus-3">
     <branch repo="github.com" checkoutdir="libxmlplusplus-3"
             module="libxmlplusplus/libxmlplusplus.git" revision="libxml++-3-2"/>
     <dependencies>
       <dep package="libxml2"/>
       <dep package="glibmm-2.4"/>
     </dependencies>
-  </autotools>
+  </meson>
 
-  <autotools id="libxmlplusplus-4">
+  <meson id="libxmlplusplus-4">
     <branch repo="github.com" checkoutdir="libxmlplusplus-4"
             module="libxmlplusplus/libxmlplusplus.git" revision="libxml++-4-0"/>
     <dependencies>
       <dep package="libxml2"/>
       <dep package="glibmm"/>
     </dependencies>
-  </autotools>
+  </meson>
 
-  <autotools id="libxmlplusplus">
+  <meson id="libxmlplusplus">
     <branch repo="github.com" checkoutdir="libxmlplusplus"
             module="libxmlplusplus/libxmlplusplus.git"/>
     <dependencies>
       <dep package="libxml2"/>
       <dep package="mm-common"/>
     </dependencies>
-  </autotools>
+  </meson>
 
   <autotools id="mono">
     <branch module="mono/mono-4.4.0.122.tar.bz2" version="4.4.0"