dev-lang/gnuprologjava: add savannah upstream metadata

Signed-off-by: Sam James <[email protected]>

dev-lang/gnuprologjava/metadata.xml

@@ -1,8 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-<maintainer type="project">
- <email>[email protected]</email>
- <name>Prolog</name>
-</maintainer>
+ <maintainer type="project">
+ <email>[email protected]</email>
+ <name>Prolog</name>
+ </maintainer>
+ <upstream>
+ <remote-id type="savannah">gnuprologjava</remote-id>
+ </upstream>
 </pkgmetadata>