Added tests for <sys/klog.h> and klogctl().

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7922 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index 97d2980..3b0d937 100644
--- a/configure.in
+++ b/configure.in
@@ -959,6 +959,7 @@
         sys/endian.h     \
         sys/epoll.h      \
         sys/eventfd.h    \
+        sys/klog.h       \
         sys/poll.h       \
         sys/signalfd.h   \
         ])
@@ -982,6 +983,7 @@
         eventfd      \
         eventfd_read \
         floor        \
+        klogctl      \
         mallinfo     \
         memchr       \
         memset       \