fixed java classpath parameter (required for gcj)

Change-Id: I0ad426a8791ab514978e01914f9f797b45d0c79a
Reviewed-on: https://gerrit.libreoffice.org/1073Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>

solenv/gbuild/JavaClassSet.mk

@@ -47,7 +47,7 @@ $(call gb_Helper_abbreviate_dirs,\
 			$(filter-out $(JARDEPS),$(4))) && \
 		$(if $(3),$(gb_JavaClassSet_JAVACCOMMAND) \
 			$(gb_JavaClassSet_JAVACDEBUG) \
-			-cp "$(T_CP)$(gb_CLASSPATHSEP)$(call gb_JavaClassSet_get_classdir,$(2))" \
+			-classpath "$(T_CP)$(gb_CLASSPATHSEP)$(call gb_JavaClassSet_get_classdir,$(2))" \
 			-d $(call gb_JavaClassSet_get_classdir,$(2)) \
 			@$$RESPONSEFILE &&) \
 		rm -f $$RESPONSEFILE &&) \

solenv/gbuild/JunitTest.mk

@@ -49,7 +49,7 @@ $(call gb_JunitTest_get_target,%) :
 		mkdir -p $(call gb_JunitTest_get_userdir,$*) && \
         (DBGSV_ERROR_OUT=shell DISABLE_SAL_DBGBOX=t \
 		    $(gb_JunitTest_JAVACOMMAND) \
-            -cp "$(T_CP)" \
+            -classpath "$(T_CP)" \
             $(DEFS) \
             org.junit.runner.JUnitCore \
             $(CLASSES) > $@.log 2>&1 || \