testing/openjdk6: use same pkgversion as gcc

testing/openjdk6/APKBUILD

@@ -99,7 +99,7 @@ build() {
 		--with-xalan2-serializer-jar=$srcdir/xalan-j_$XALAN2_VER/serializer.jar \
 		--with-xerces2-jar=$srcdir/xerces-${XERCES_VER//./_}/xercesImpl.jar \
 		--with-rhino=$srcdir/rhino$RHINO_VER/js.jar \
-		--with-pkgversion=Alpine_Linux \
+		--with-pkgversion=Alpine \
 		  || return 1
 
 	make || return 1