Add a directory 'contrib/cygtermd', containing the source code for my

hacky helper program to let PuTTY act as a local pterm-oid on
Cygwin-enabled Windows systems.

[originally from svn r9191]

contrib/cygtermd/malloc.c

@@ -0,0 +1,43 @@
+/*
+ * malloc.c: implementation of malloc.h
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "malloc.h"
+
+extern void fatal(const char *, ...);
+
+void *smalloc(size_t size) {
+    void *p;
+    p = malloc(size);
+    if (!p) {
+	fatal("out of memory");
+    }
+    return p;
+}
+
+void sfree(void *p) {
+    if (p) {
+	free(p);
+    }
+}
+
+void *srealloc(void *p, size_t size) {
+    void *q;
+    if (p) {
+	q = realloc(p, size);
+    } else {
+	q = malloc(size);
+    }
+    if (!q)
+	fatal("out of memory");
+    return q;
+}
+
+char *dupstr(const char *s) {
+    char *r = smalloc(1+strlen(s));
+    strcpy(r,s);
+    return r;
+}