java/sigar: fix compilation with jdk21

PR:	272855

java/sigar/files/patch-bindings_java_build.xml

@@ -0,0 +1,18 @@
+--- bindings/java/build.xml.orig	2025-12-11 12:56:58 UTC
++++ bindings/java/build.xml
+@@ -94,7 +94,6 @@
+   <target name="compile">
+     <mkdir dir="${build}/classes"/>
+     <javac destdir="${build}/classes"
+-           source="1.6" target="1.6"
+            sourcepath=""
+            debug="true"
+            classpathref="libjars">
+@@ -109,7 +108,6 @@
+   <target name="compile-tests">
+     <mkdir dir="${build}/classes"/>
+     <javac destdir="${build}/classes"
+-           source="1.6" target="1.6"
+            sourcepath=""
+            debug="true"
+            classpathref="testjars">

java/sigar/files/patch-bindings_java_hyperic__jni_jni-build.xml

@@ -0,0 +1,10 @@
+--- bindings/java/hyperic_jni/jni-build.xml.orig	2025-12-11 13:12:48 UTC
++++ bindings/java/hyperic_jni/jni-build.xml
+@@ -161,7 +161,6 @@ -->
+     <echo message="jni.src=${jni.src}, jni.jdk.os=${jni.jdk.os}, ${sun.arch.data.model}-bit"/>
+ 
+     <javac srcdir="${jni.src.java}" destdir="${build}/classes" debug="true"
+-           source="1.6" target="1.6"
+ 	   includes="org/hyperic/jni/*.java"/>
+ 
+     <taskdef name="libarch" classname="org.hyperic.jni.ArchNameTask">