disable memslap, for systems that don't have anything newer than gcc-4.0
--- Makefile.in.orig	2012-03-06 00:59:20.000000000 -0600
+++ Makefile.in	2012-03-06 00:59:20.000000000 -0600
@@ -194,7 +194,7 @@
 	clients/memerror$(EXEEXT) clients/memexist$(EXEEXT) \
 	clients/memtouch$(EXEEXT) clients/memflush$(EXEEXT) \
 	clients/memparse$(EXEEXT) clients/memping$(EXEEXT) \
-	clients/memrm$(EXEEXT) clients/memslap$(EXEEXT) \
+	clients/memrm$(EXEEXT) \
 	clients/memstat$(EXEEXT) $(am__EXEEXT_1)
 noinst_PROGRAMS = libtest/unittest$(EXEEXT) libtest/skiptest$(EXEEXT) \
 	libtest/wait$(EXEEXT) libmemcached-1.0/t/c_test$(EXEEXT) \