Add config option to use dlmalloc instead of mheap

Configure w/ --enable-dlmalloc, see .../build-data/platforms/vpp.mk

src/vppinfra/dlmalloc.[ch] are slightly modified versions of the
well-known Doug Lea malloc. Main advantage: dlmalloc mspaces have no
inherent size limit.

Change-Id: I19b3f43f3c65bcfb82c1a265a97922d01912446e
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/src/vcl/vcl_test_server.c b/src/vcl/vcl_test_server.c
index 5d37b46..98c36a4 100644
--- a/src/vcl/vcl_test_server.c
+++ b/src/vcl/vcl_test_server.c
@@ -25,6 +25,7 @@
 #include <fcntl.h>
 #include <vcl/vcl_test.h>
 #include <sys/epoll.h>
+#include <vppinfra/mem.h>
 
 typedef struct
 {
@@ -310,6 +311,8 @@
   uint16_t port = SOCK_TEST_SERVER_PORT;
   vppcom_endpt_t endpt;
 
+  clib_mem_init_thread_safe (0, 64 << 20);
+
   opterr = 0;
   while ((c = getopt (argc, argv, "6D")) != -1)
     switch (c)