Minor beautification of build time messages

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 81b45e0..f032119 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -124,32 +124,32 @@
 #  Decide which features to actually use.
 
 if (SP_HAVE_EPOLL)
-    message ("Using epoll for socket monitoring")
+    message ("-- Using epoll for socket monitoring")
     add_definitions (-DSP_USE_EPOLL)
 elseif (SP_HAVE_KQUEUE)
-    message ("Using kqueue for socket monitoring")
+    message ("-- Using kqueue for socket monitoring")
     add_definitions (-DSP_USE_KQUEUE)
 elseif (SP_HAVE_POLL)
-    message ("Using poll for socket monitoring")
+    message ("-- Using poll for socket monitoring")
     add_definitions (-DSP_USE_POLL)
 endif ()
 
 if (SP_HAVE_EVENTFD)
-    message ("Using eventfd for signaling")
+    message ("-- Using eventfd for signaling")
     add_definitions (-DSP_USE_EVENTFD)
 elseif (SP_HAVE_SOCKETPAIR)
-    message ("Using socketpair for signaling")
+    message ("-- Using socketpair for signaling")
     add_definitions (-DSP_USE_SOCKETPAIR)
 endif ()
 
 if (SP_HAVE_IFADDRS)
-    message ("Using getifaddrs for NIC name resolution")
+    message ("-- Using getifaddrs for NIC name resolution")
     add_definitions (-DSP_USE_IFADDRS)
 elseif (SP_HAVE_SIOCGIFADDR)
-    message ("Using SIOCGIFADDR for NIC name resolution")
+    message ("-- Using SIOCGIFADDR for NIC name resolution")
     add_definitions (-DSP_USE_SIOCGIFADDR)
 else ()
-    message ("No NIC name resolution supported")
+    message ("-- No NIC name resolution mechanism used")
     add_definitions (-DSP_USE_LITERAL_IFADDR)
 endif ()