[libgda] Handle JDK 1.7 for java detection

[Vivien Malerba <vivien src gnome org>]

commit 9c9fc5a434752218aa29ee2c6ecdb372ad5b4a6d
Author: Vivien Malerba <malerba gnome-db org>
Date:   Sun Nov 13 20:59:25 2011 +0100

    Handle JDK 1.7 for java detection

 m4/java.m4 |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/m4/java.m4 b/m4/java.m4
index c1f5e66..7f8e264 100644
--- a/m4/java.m4
+++ b/m4/java.m4
@@ -170,6 +170,11 @@ m4_define([_JAVA_CHECK_INTERNAL],
 		    JTYPE="Sun JRE 1.6"
 		    JFLAGS="-Xlint:unchecked -Xlint:deprecation"
 		    ;;
+                JRE1.7.*)
+		    try_java=true
+		    JTYPE="Sun JRE 1.7"
+		    JFLAGS="-Xlint:unchecked -Xlint:deprecation"
+		    ;;
                 JREgcj-4*)
 		    try_java=true
 		    JTYPE="GCJ"
@@ -281,6 +286,7 @@ m4_define([_JAVA_CHECK_INTERNAL],
 #include <jni.h>
 int main(void) {
     jobject o;
+    o = NULL;
     return 0;
 }])],
 	               [AC_MSG_RESULT(yes)],
@@ -294,6 +300,7 @@ int main(void) {
 #include <jni.h>
 int main(void) {
     jobject o;
+    o = NULL;
     return 0;
 }])],
 	              [AC_MSG_RESULT(yes)],