6827026: Change javac source and target default to 7

Reviewed-by: darcy, ohair

jaxp/make/Makefile

@@ -77,7 +77,15 @@ else
   ifdef JAVAC_TARGET_ARG
     ANT_OPTIONS += -Djavac.target=$(JAVAC_TARGET_ARG)
   endif
-endif
+endif 
+
+ifdef SOURCE_LANGUAGE_VERSION
+  ANT_OPTIONS += -Djavac.source=$(SOURCE_LANGUAGE_VERSION)
+else
+  ifdef JAVAC_SOURCE_ARG 
+    ANT_OPTIONS += -Djavac.source=$(JAVAC_SOURCE_ARG)
+  endif
+endif 
 
 ifdef ALT_BOOTDIR
   ANT_JAVA_HOME = JAVA_HOME=$(ALT_BOOTDIR)

jaxp/make/build.properties

@@ -30,6 +30,7 @@
 # one of the standard user build.properties files (see build.xml)
 
 # options for the <javac> tasks used to compile the tools
+javac.source = 5
 javac.target = 5
 javac.debug = true
 javac.debuglevel = source,lines

jaxp/make/build.xml

@@ -85,6 +85,7 @@
              destdir="${build.classes.dir}"
              memoryInitialSize="${javac.memoryInitialSize}"
              memoryMaximumSize="${javac.memoryMaximumSize}"
+	     source="${javac.source}"
              target="${javac.target}">
          <compilerarg value="-J-Xbootclasspath/p:${bootstrap.dir}/lib/javac.jar"/>
          <compilerarg line="${javac.version.opt}"/>