add kmod_module_get_filtered_blacklist()

This function will filter the given list against the known blacklist,
returning a new list with remaining modules with the reference
incremented.
diff --git a/Makefile.am b/Makefile.am
index da91e5c..b6ba9d8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -60,6 +60,7 @@
 noinst_PROGRAMS = test/test-insmod test/test-rmmod test/test-rmmod2 \
 		  test/test-lookup test/test-path-from-name \
 		  test/test-get-dependencies test/test-mod-double-ref \
+		  test/test-blacklist \
 		  $(check_PROGRAMS)
 
 test_test_rmmod_SOURCES = test/test-rmmod.c
@@ -82,3 +83,6 @@
 
 test_test_mod_double_ref_SOURCES = test/test-mod-double-ref.c
 test_test_mod_double_ref_LDADD = libkmod/libkmod.la
+
+test_test_blacklist_SOURCES = test/test-blacklist.c
+test_test_blacklist_LDADD = libkmod/libkmod.la