Merge topic 'update_tpp_imported.md'

2cc82960 Update which third party projects use the update.sh framework
Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !1677

ThirdParty/imported.md

 # Converted projects
 
+  * [diy2](diy2/update.sh)
   * [jsoncpp](jsoncpp/update.sh)
   * [kwiml](../Utilities/KWIML/update.sh)
   * [kwsys](../Utilities/KWSys/update.sh)
+  * [libproj4](libproj4/update.sh)
   * [metaio](../Utilities/MetaIO/update.sh)
   * [png](png/update.sh)
+  * [xdmf3](xdmf3/update.sh)
   * [zlib](zlib/update.sh)