Name libraries -client and -server for consistency

Instead of wayland-server and wayland...
diff --git a/configure.ac b/configure.ac
index 1ffe3e9..4ab0955 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,5 +25,5 @@
 	     [AC_MSG_ERROR([Can't find expat library. Please install expat.])])
 AC_SUBST(EXPAT_LIBS)
 
-AC_CONFIG_FILES([config.mk wayland-server.pc wayland.pc])
+AC_CONFIG_FILES([config.mk wayland-server.pc wayland-client.pc])
 AC_OUTPUT