build-java-target.diff: allow to define java target

i#93115
allow to define java target, so the build is usable with the JVM 1.5
even when it is built with JDK 1.6

qadevOOo/makefile.mk

@@ -43,7 +43,7 @@ TST:
 
 .IF "$(SOLAR_JAVA)"=="TRUE"	
 .IF "$(ANT_HOME)"!="NO_ANT_HOME"
-ANT_FLAGS+=-Dbuild.source=1.5
+ANT_FLAGS+=-Dbuild.source=$(JAVA_SOURCE_VER)
 .IF "$(L10N_framework)"==""
 ALLTAR: ANTBUILD
 .ENDIF