New targets to compile and install rollback tests only with USE=rbtest emerge ...

tests/Makefile

Index: tests/Makefile
diff --git a/tests/Makefile b/tests/Makefile
index 957e9bbf70bc21f8f010feef6d65aeeb6f322e7e..e474dbb0e53abdd793d46e28a336478edad74dee 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -32,9 +32,9 @@ ifneq (${RUNTESTS},)
 EXTRA_TARGET = runtests
 endif
 
-# Disable rollback_index_test by default because it requires the real
-# tlcl lib
-all: $(TEST_BINS) ${EXTRA_TARGET} # $(BUILD_ROOT)/rollback_index_test
+all: $(TEST_BINS) ${EXTRA_TARGET}
+
+rbtest: $(BUILD_ROOT)/rollback_index_test
 
 ${TEST_LIB}: ${TEST_LIB_OBJS}
 	rm -f $@
@@ -101,11 +101,8 @@ runtests: genkeys runcgpttests runcryptotests runmisctests
 #	${BUILD_ROOT}/firmware_rollback_tests
 #	${BUILD_ROOT}/kernel_rollback_tests
 
-# Must have a dummy install target for ebuild
-install:
-
-#install: $(BUILD_ROOT)/rollback_index_test
-#	mkdir -p $(DESTDIR)
-#	cp -f $(BUILD_ROOT)/rollback_index_test $(DESTDIR)
+install-rbtest: $(BUILD_ROOT)/rollback_index_test
+	mkdir -p $(DESTDIR)
+	cp -f $(BUILD_ROOT)/rollback_index_test $(DESTDIR)
 
 -include ${ALL_DEPS}