Add 'install-ptest' rule.

Signed-off-by: Tudor Florea <tudor.florea@enea.com>
Upstream-Status: Pending

diff -ruN a/Makefile.am b/Makefile.am
--- a/Makefile.am	2013-07-12 17:11:05.278331557 +0200
+++ b/Makefile.am	2013-07-12 17:14:27.033788016 +0200
@@ -204,6 +204,16 @@
 
 distclean-local: $(DISTCLEAN_LOCAL_HOOKS)
 
+install-ptest:
+	@$(MKDIR_P) $(DESTDIR)/testsuite
+	@for file in $(TESTSUITE); do \
+		install $$file $(DESTDIR)/testsuite; \
+	done;
+	@cp Makefile $(DESTDIR)
+	@sed -i 's/^Makefile/_Makefile/'  ${DESTDIR}/Makefile
+	@tar -czf $(DESTDIR)/tools.tgz $(noinst_SCRIPTS) $(noinst_PROGRAMS)
+	@tar -C testsuite -czf $(DESTDIR)/testsuite.tgz rootfs-pristine .libs
+
 # ------------------------------------------------------------------------------
 # custom release helpers
 # ------------------------------------------------------------------------------