gprofng/testsuite: skip Java test without JDK

There's no point in even trying the Java test when gprofng was built
without Java support, and when the building of the constituents of the
testcase also would fail. On such systems this converts the respective
tests from "unresolved" to "unsupported", making the overall testsuite
run no longer report failure just because of this.

gprofng/Makefile.am

@@ -61,6 +61,7 @@ check-DEJAGNU: site.exp development.exp
 	runtest=$(RUNTEST); \
 	if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
 	  $$runtest --tool $(DEJATOOL) --srcdir $${srcroot}/testsuite \
+		JDK_INC="$(jdk_inc)" \
 		GPROFNG_BROKEN_JAVAC="$(GPROFNG_BROKEN_JAVAC)" \
 		MAKE="$(MAKE)" CC="$(CC)" CFLAGS="$(CFLAGS) $(PTHREAD_CFLAGS)" \
 		LDFLAGS="$(LDFLAGS)" LIBS="$(PTHREAD_LIBS) $(LIBS)" \

gprofng/Makefile.in

@@ -938,6 +938,7 @@ uninstall-am:
 @TCL_TRY_TRUE@	runtest=$(RUNTEST); \
 @TCL_TRY_TRUE@	if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
 @TCL_TRY_TRUE@	  $$runtest --tool $(DEJATOOL) --srcdir $${srcroot}/testsuite \
+@TCL_TRY_TRUE@		JDK_INC="$(jdk_inc)" \
 @TCL_TRY_TRUE@		GPROFNG_BROKEN_JAVAC="$(GPROFNG_BROKEN_JAVAC)" \
 @TCL_TRY_TRUE@		MAKE="$(MAKE)" CC="$(CC)" CFLAGS="$(CFLAGS) $(PTHREAD_CFLAGS)" \
 @TCL_TRY_TRUE@		LDFLAGS="$(LDFLAGS)" LIBS="$(PTHREAD_LIBS) $(LIBS)" \

gprofng/testsuite/gprofng.display/display.exp

@@ -54,6 +54,7 @@ switch $pltf {
   }
 }
 
+global JDK_INC
 global GPROFNG_BROKEN_JAVAC
 
 foreach line $table {
@@ -63,7 +64,8 @@ foreach line $table {
 
   verbose [file rootname $line]
   verbose running display test $line
-  if { $GPROFNG_BROKEN_JAVAC == "yes" && $dir == "jsynprog" } {
+  if { $dir == "jsynprog"
+       && ($JDK_INC == "" || $GPROFNG_BROKEN_JAVAC == "yes") } {
     unsupported $dir
   } else {
     run_display_test $dir $cflags $gprofflags