Add sunrpc.

src/libsunrpc/emalloc.c

@@ -0,0 +1,34 @@
+#include <u.h>
+#include <libc.h>
+#include <thread.h>
+#include <sunrpc.h>
+
+void*
+emalloc(ulong n)
+{
+	void *v;
+
+	v = mallocz(n, 1);
+	if(v == nil)
+{
+abort();
+		sysfatal("out of memory");
+}
+	setmalloctag(v, getcallerpc(&n));
+	return v;
+}
+
+void*
+erealloc(void *v, ulong n)
+{
+	v = realloc(v, n);
+	if(v == nil)
+{
+abort();
+		sysfatal("out of memory");
+}
+	setrealloctag(v, getcallerpc(&n));
+	return v;
+}
+
+