Fix compilation issues on OS X - mainly #include file changes (Lars Immisch)

diff --git a/src/abis_nm.c b/src/abis_nm.c
index 9820d97..6909f78 100644
--- a/src/abis_nm.c
+++ b/src/abis_nm.c
@@ -26,7 +26,7 @@
 #include <unistd.h>
 #include <stdio.h>
 #include <fcntl.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include <libgen.h>
 #include <time.h>
 #include <limits.h>